Frequently asked questions

Our FAQ (frequently asked questions) about our products, assembly, maintenance, our technical choices, choosing your SPCK, SPCE… drivetrain.

How to choose your AllYoogs® drivetrain?

Product	SPCK.Kit	SPCX.Kit	Teeth.Less	SPCE.Kit
Public	Children <45kg up to “Expert XL” frame	Children up to “Expert XL” frame	All riders	All riders from PRO frame upwards
Chain	SPCK (Small Pitch Chain)	SPCE (Small Pitch Chain)	11/128 & 3/32 – Standard Chains	SPCE (Small Pitch Chain)
Chainring	SPCK	SPCX	Teeth Less	SPCE
Cog	SPCK	SPCX	Teeth Less	SPCE
Tools	SPCK	SPCE		SPCE
Chain tensioner	SPCK *	SPCX *	Universal with spring*	SPCE / Chain guide
Tracks	European	No European

* not mandatory

Questions/answers on:

– The products :

– The transport :

The delivery
DAP incoterms
Return and exchange

FAQ about our products

The AllYoogs® SPCK / SPCE chain

Use and maintenance advice

Since the pitch is smaller on the SPCK/SPCE chain, grease mixed with dust or mud could clog it.
It is recommended to use a dry PTFE lubricant instead of conventional grease.
Before application, thoroughly degrease the chain using gasoline or brake cleaner.
Apply the lubricant every 2 to 3 weeks.
When conditions are wet or muddy, clean using water only.

PTFE dry lubricant - SPCK drivetrain kit — PTFE dry lubricant - SPCK kit

BCS-400 Dry Lubricant - SPCE Drivetrain Kit — BCS-400 Dry Lubricant - SPCE Kit

How to fit the SPCK quick link ?

Position the two ends of the chain facing each other.
Pass the link from the outside towards the inside of the bike in the 2 strands of the chain.
Place the 2 mobile plates on the link on the inside of the bike.
Using a small screwdriver, place the bulding side of the clip at the front, in the direction of the chain's movement.

How to fit the SPCE quick link ?

With the SPCE tensioner, we recommend riveting the chain.

It is possible to use a quick link until the end of use of the SPCE chain guide (maximum category U17).

Position the two ends of the chain facing each other.
Pass the link from the outside toward the inside of the bike in the 2 strands of the chain.
Place the mobile plate on the link on the inside of the bike.
Using a small screwdriver, place the bulding side of the clip at the front, in the direction of the chain's movement.

How to rivet your SPCK chain using our Chain breaker / Riveting tool ?

Removing the Chain Rivet

Insert the chain correctly into the chain breaker tool, ensuring it is firmly positioned at the base of the tool.
Use the small pin to loosen the rivet until it is almost completely removed.
Use the large pin to push the axel out completely and separate the links.
Be careful not to lose the axel, as it is essential for reassembly.
Make sure to use each pin according to its specific function to avoid damage.
Always check that the pin is perfectly aligned with the chain axis. Improper positioning could weaken the tool and lead to breakage.

Reassembling the Chain

Position the chain breaker tool so that the screw is perfectly aligned with the chain rivet.
Gradually tighten the screw towards the rivet.
Tighten gently until you feel resistance, then make one final full turn before loosening the chain breaker tool.

How to rivet your SPCE chain using our Chain breaker / Riveting tool ?

Removing the Chain Rivet

- Insert the chain correctly into the chain breaker tool, holding it firmly against the bottom of the tool.
- Use the pin to loosen the rivet until it is almost completely removed and separate the links.

Be careful not to lose the axel, as it is essential for reassembly.
Always check that the pin is perfectly aligned with the chain axis. Incorrect positioning could weaken the tool and lead to breakage.

Reassembling the Chain

Position the chain breaker tool so that the screw is perfectly aligned with the chain rivet.
Gradually tighten the screw against the rivet.
Tighten gently until you feel resistance, then make one final full turn before loosening the chain breaker tool.
Once the rivet is in place, you can peen the end using a punch (3.97 mm = 5/32").

How to choose your SPCK chainring and cog ?

How to choose your child's gear ratio ?

What is the right gear ratio for your child in BMX ? (EU tracks)

Is your child starting BMX and unsure which gear ratio to choose?

Here are the statistics we’ve gathered since 2020. These data apply to both beginners and competitive riders, taking into account the age, height, and average weight of young riders.

Remember to adjust the gear ratio (playing the decimal point) between 3 to 5 m starting hills — lap times are directly affected, which is why our SPCK kit makes all the difference !

	6 years	7 years	8 years	9 years	10 years	11 years	12 years
Height	116 cm	122 cm	128 cm	134 cm	140 cm	146 cm	152 cm
Tyre 1.1/8	35/ 35,5 x 16	36/ 36,5 x 16	37/ 37,5 x 16	38/ 38,5 x 16	39/ 39,5 x 16	40/ 40,5 x 16
Tyre 1.3/8					37,5/ 38 x 16	38,5/ 39 x 16	39,5/ 40 x 16
Frame	Mini 115-125 cm	Mini 115-125 cm	Junior 125-135 cm	Junior/ Expert	Expert 135-145 cm	Expert/ Expert XL	Expert.XL 145-155 cm

ℹ️ Important: For a young girl, use one tooth less than the values shown in the table.

SPCK development tables

4-bolt development - 20 x 1 1/8 tyre

In the table below, find the value indicated at the intersection of the front sprocket and the cog of your child.

Example: cog = 16 and front sprocket = 37. The value to take into account = 376,3

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.1/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	289,3	298,3	307,4	316,4	325,5	334,5	343,6	352,6	361,6	370,7	379,7	388,8	397,8	406,8
17	306,3	315,9	325,5	335,0	344,6	354,2	363,8	373,3	382,9	392,5	402,0	411,6	421,2	430,8
16	325,5	335,6	345,8	356,0	366,2	376,3	386,5	396,7	406,8	417,0	427,2	437,3	447,5	457,7
15	347,2	358,0	368,9	379,7	390,6	401,4	412,3	423,1	434,0	444,8	455,7

To obtain the SPCK equivalence :

In the table, find the values closest to those in the table above (higher values). The value to be taken into account is the one with the smallest cog.

Example with 376,3: the closest values are 378 and 379,7. The smallest cog is 30, so the choice is a 30 cog with a 70 front sprocket.

AllYoogs	SPCK FRONT SPROCKET 4-bolt 104mm - 20 x 1.1/8 TYRE
SPCK REAR SPROCKET	67	68	69	70	71	72	73
34	320,7	325,5	330,3	335,0	339,8	344,6	349,4
33	330,4	335,3	340,3	345,2	350,1	355,1	360,0
32	340,7	345,8	350,9	356,0	361,1	366,2	371,2
31	351,7	357,0	362,2	367,5	372,7	378,0	383,2
30	363,4	368,9	374,3	379,7	385,1	390,6	396,0
29	376,0	381,6	387,2	392,8	398,4	404,0	409,6
28	389,4	395,2	401,0	406,8	412,6	418,5	424,3

4-bolt development - 20 x 1 3/8 tyre

In the table below, find the value indicated at the intersection of the front sprocket and the cog of your child.

Example: rear sprocket = 16 and front sprocket = 40. The value to take into account = 421

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.3/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	299,4	308.7	318.1	327.4	336.8	346.1	355.5	364.8	374.2	383.6	392.9	402.3	411.6	421,0
17	317.0	326.9	336.8	346.7	356.6	366.5	376.4	386.3	396.2	406.1	416.0	425.9	435.8	445,7
16	336.8	347.3	357.8	368.4	378.9	389.4	399.9	410.4	421.0	431.5	442.0	452,5	463,1	473,6
15	359.2	370.5	381.7	392.9	404.1	415.4	426.6	437.8	449,0	460,3	471,5

To obtain the SPCK equivalence :

In the table, find the values closest to those in the table above (higher values). The value to be taken into account is the one with the smallest cog.

Example with 421: the closest values are 423,9 and 424,1. The smallest cog is 27, so the choice is a 27 SPCK stainless steel cog with a 68 front sprocket.
Be careful with the 27 sprocket, the SPCK chain tensioner is highly recommended.

AllYoogs	SPCK FRONT SPROCKET 4-bolt 104mm - 20 x 1.3/8 TYRE
SPCK REAR SPROCKET	67	68	69	70	71	72	73
34	331.8	336.8	341.7	346.7	351.6	356.6	361.5
33	341.9	347.0	352.1	357.2	362.3	367.4	372.5
32	352.6	357.8	363.1	368.4	373.6	378.9	384.1
31	363.9	369.4	374.8	380.2	385.7	391.1	396.5
30	376.1	381.7	387.3	392.9	398.5	404.1	409.7
29	389.0	394.8	400.7	406.5	412.3	418.1	423.9
28	402.9	408.9	415.0	421.0	427.0	433.0	439.0

5-bolt development - 20 x 1 1/8 tyre

In the table below, find the value indicated at the intersection of the front and the rear sprockets of your child.

Example: rear sprocket = 17 and front sprocket = 40. The value to take into account = 382,9

	CLASSIC FRONT SPROCKET 5-bolt 110 mm - 20 x 1.1/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	289,3	298,3	307,4	316,4	325,5	334,5	343,6	352,6	361,6	370,7	379,7	388,8	397,8	406,8
17	306,3	315,9	325,5	335,0	344,6	354,2	363,8	373,3	382,9	392,5	402,0	411,6	421,2	430,8
16	325,5	335,6	345,8	356,0	366,2	376,3	386,5	396,7	406,8	417,0	427,2	437,3	447,5	457,7
15	347,2	358,0	368,9	379,7	390,6	401,4	412,3	423,1	434,0	444,8	455,7

To obtain the SPCK equivalence :

In the table, find the values closest to those in the table above (higher values). The value to be taken into account is the one with the smallest cog.

Example with 382,9 : the closest values are : 383,2 and 385,1. The smallest cog is 30, so the choice is a 30 cog with a 71 front sprocket.

AllYoogs	SPCK FRONT SPROCKET 5-bolt 110mm - 20 x 1.1/8 TYRE
SPCK REAR SPROCKET	70	71	72	73
35	325.5	330.1	334.8	339.4
34	335.0	339.8	344.6	349.4
33	345.2	350.1	355.1	360.0
32	356.0	361.1	366.2	371.2
31	367.5	372.7	378.0	383.2
30	379.7	385.1	390.6	396.0
29	392.8	398.4	404.0	409.6
28	406.8	412.6	418.5	424.3

5-bolt development - 20 x 1 3/8 tyre

In the table below, find the value indicated at the intersection of your child’s front sprocket and cog.

Example : cog = 18 and front sprocket = 41. The value to take into account = 383,6

	CLASSIC FRONT SPROCKET 5-bolt 110 mm - 20 x 1.3/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	299,4	308.7	318.1	327.4	336.8	346.1	355.5	364.8	374.2	383.6	392.9	402.3	411.6	421,0
17	317.0	326.9	336.8	346.7	356.6	366.5	376.4	386.3	396.2	406.1	416.0	425.9	435.8	445,7
16	336.8	347.3	357.8	368.4	378.9	389.4	399.9	410.4	421.0	431.5	442.0	452,5	463,1	473,6
15	359.2	370.5	381.7	392.9	404.1	415.4	426.6	437.8	449,0	460,3	471,5

To obtain the SPCK equivalence :

In the table, find the values closest to those in the table above (higher values). The value to be taken into account is the one with the smallest gear.

Example with 383,6 : the closest values are : 384,1 and 385,7 The smallest rear sprocket is 31, so the choice is a 31 cog with a 71 front sprocket.

AllYoogs	SPCK REAR SPROCKET 5-bolt 110 mm - 20 x 1.3/8 TYRE
REAR SPROCKET	70	71	72	73
35	336.8	341.6	346.4	351.2
34	346.7	351.6	356.6	361.5
33	357.2	362.3	367.4	372.5
32	368.4	373.6	378.9	384.1
31	380.2	385.7	391.1	396.5
30	392.9	398.5	404.1	409.7
29	406.5	412.3	418.1	423.9
28	421.0	427.0	433.0	439.0

How to choose your SPCX chainring and cog ?

How to choose your child's gear ratio ?

What is the right gear ratio for your child in BMX ? (Non-EU tracks)

Is your child starting BMX and unsure which gear ratio to choose?

Here are the statistics we’ve gathered since 2020. These data apply to both beginners and competitive riders, taking into account the age, height, and average weight of young riders.

Remember to adjust the gear ratio (playing the decimal point) between 3 to 5 m starting hills — lap times are directly affected, which is why our SPCX kit makes all the difference !

	6 years	7 years	8 years	9 years	10 years	11 years	12 years
Height	116 cm	122 cm	128 cm	134 cm	140 cm	146 cm	152 cm
Tire 1.1/8	36/ 36,5 x 16	37/ 37,5 x 16	38/ 38,5 x 16	39/ 39,5 x 16	40/ 40,5 x 16	41/ 41,5 x 16
Tire 1.3/8					38,5/ 39 x 16	39,5/ 40 x 16	40,5/ 41 x 16
Frame	Mini 115-125 cm	Mini 115-125 cm	Junior 125-135 cm	Junior/ Expert	Expert 135-145 cm	Expert/ Expert XL	Expert.XL 145-155 cm

ℹ️ Important: For a young girl, use one tooth less than the values shown in the table.

SPCX development tables

4-bolt development - 20 x 1 1/8 tyre

In the table below, find the value indicated at the intersection of the chainring and the cog of your child.

Example: cog = 16 and chainring = 37. The value to take into account = 376,3

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.1/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	289,3	298,3	307,4	316,4	325,5	334,5	343,6	352,6	361,6	370,7	379,7	388,8	397,8	406,8
17	306,3	315,9	325,5	335,0	344,6	354,2	363,8	373,3	382,9	392,5	402,0	411,6	421,2	430,8
16	325,5	335,6	345,8	356,0	366,2	376,3	386,5	396,7	406,8	417,0	427,2	437,3	447,5	457,7
15	347,2	358,0	368,9	379,7	390,6	401,4	412,3	423,1	434,0	444,8	455,7

To obtain the SPCX equivalence :

In the table, find the values closest to those in the table above (same or higher values). The value to be taken into account is the one with the smallest cog.

Example with 376,3: the closest values are 376,3 and 378,0. So the choice is a 31 cog with a 72 chainring.

AllYoogs	SPCX FRONT SPROCKET 4-bolt 104mm - 20 x 1.1/8 TYRE
SPCX REAR SPROCKET	71	72	73	74	75	76	77
32	361,1	366,2	371,2	376,3	381,4	386,5	391,6
31	372,7	378,0	383,2	388,5	393,7	399,0	404,2
30	385,1	390,6	396,0	401,4	406,8	412,3	417,7
29	398,4	404,0	409,6	415,3	420,9	426,5	432,1
28	412,6	418,5	424,3	430,1	435,9	441,7	447,5

4-bolt development - 20 x 1 3/8 tyre

In the table below, find the value indicated at the intersection of the chainring and the cog of your child.

Example: cog = 16 and chainring = 40. The value to take into account = 421,0

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.3/8 TYRE
REAR SPROCKET	32	33	34	35	36	37	38	39	40	41	42	43	44	45
18	299,4	308.7	318.1	327.4	336.8	346.1	355.5	364.8	374.2	383.6	392.9	402.3	411.6	421,0
17	317.0	326.9	336.8	346.7	356.6	366.5	376.4	386.3	396.2	406.1	416.0	425.9	435.8	445,7
16	336.8	347.3	357.8	368.4	378.9	389.4	399.9	410.4	421.0	431.5	442.0	452,5	463,1	473,6
15	359.2	370.5	381.7	392.9	404.1	415.4	426.6	437.8	449,0	460,3	471,5

To obtain the SPCX equivalence :

In the table, find the values closest to those in the table above (same or higher values). The value to be taken into account is the one with the smallest cog.

Example with 421,0: the closest values are 421,0 and 423,9. So the choice is a 29 cog with a 73 chainring.

AllYoogs	SPCX FRONT SPROCKET 4-bolt 104mm - 20 x 1.3/8 TYRE
SPCX REAR SPROCKET	71	72	73	74	75	76	77
32	373,6	378,9	384,1	389,4	394,7	399,9	405,2
31	385,7	391,1	396,5	402,0	407,4	412,8	418,3
30	398,5	404,1	409,7	415,4	421,0	426,6	432,2
29	412,3	418,1	423,9	429,7	435,5	441,3	447,1
28	427,0	433,0	439,0	445,0	451,0	457,1	463,1

How to choose your Teeth Less chainring and cog ?

Special features

Choosing and installing the Teeth Less® range

Teeth Less sprockets work with standard chains. Consequently, the choice remains identical to the development of standard products.
The only special feature of the ‘Teeth Less’ range is that our sprockets run in a single, clearly identifiable direction: "AY" logos and chamfers must face outward.

Teeth Less	4 mm	5 mm
Public	Boys up to the “U17” and “Elite Women” categories	Up to “Elite Men” and “Cruiser“ categories
Chain	Chaine Standard 11/128	Chaine Standard 3/32
Tools	Standard	Standard
Chain tensioner	Universal with spring *	Universal with spring *

How to choose your SPCE chainring and cog ?

Development with a 20 x 1 3/8 tyre

In the table below, find the value indicated at the intersection of the front sprocket and the rear sprockets.

For example: rear sprocket = 16 and front sprocket = 42. The value to be taken into account = 442.0

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.3/8 TYRE
REAR SPROCKET	40	41	42	43	44	45
18	374.2	383.6	392.9	402.3	411.6	421,0
17	396.2	406.1	416.0	425.9	435.8	445,7
16	421.0	431.5	442.0	452,5	463,1	473,6
15	449,0	460,3	471,5

To obtain the SPCE equivalence :

In the table, find the value that is closest to the one found in the table above (equal or greater value).

Example with 442.0 : we advise you to use a 30 rear sprocket with a 79 front sprocket.

AllYoogs	SPCE FRONT SPROCKET 4-bolt 104mm - 20 x 1.3/8 TYRE
SPCE REAR SPROCKET	75	76	77	78	79	80
30	421,0	426,6	432,2	437,8	443,4	449,0

Development with a 20 x 1.6 tyre

In the table below, find the value indicated at the intersection of the front sprocket and the rear sprockets.

For example : - rear sprocket = 16 and front sprocket = 45. The value to be taken into account = 436.3
- rear sprocket = 17 and front sprocket = 49. The value take into account = 447,1

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.6 TYRE
REAR SPROCKET	40	41	42	43	44	45	46	47	48	49	50	51	52
18	344,7	353,3	361,9	370,6	379,2	387,8	396,4	405,0	413,6	422,3	430,9	439,5	448,1
17	365,0	374,1	383,2	392,4	401,5	410,6	419,7	428,9	438,0	447,1	456,2	465,4	474,5
16	387,8	397,5	407,2	416,9	426,6	436,3	446,0	455,7	465,4	475,0	484,7	494,4	504,1
15	413,6	424,0	434,3	444,7	455,0	465,4	475,7	486,0	496,4	506,7	517,1	527,4	537,7

To obtain the SPCE equivalence :

In the table, find the value that is closest to the one found in the table above (equal or greater value).

Example with 436,3 : we advise you to use a 28 rear sprocket with a 79 front sprocket.
447,1 : we advise you to use a 28 rear sprocket with an 81 front sprocket.

AllYoogs	SPCE FRONT SPROCKET 4-bolt 104 mm - 20 x 1.6 TYRE
SPCE REAR SPROCKET	75	76	77	78	79	80	81	82	83	84	85
30	387,8	393,0	398,1	403,3	408,5	413,6	418,8	424,0	429,2	434,3	349,5
28	415,5	421,0	426,6	432,1	437,7	443,2	448,7	454,3	459,8	465,4	470,9

Summary with a 20 x 1.6 tyre

Overall summary of the conversion table.

Reference calculation: (SPCE front sprocket ÷ SPCE cog) x 16 = standard front sprocket

Development = distance covered in cm by the rear wheel during one pedal turn

	SUMMARY STANDARD/SPCE conversion table - 20 x 1.6 TYRE
Development	387,8	393,0	398,1	403,3	408,5	413,6	415,5	418,8	421,0	424,0	426,6

Front sprocket	40,00	40,53	41,07	41,60	42,13	42,67	42,86	43,20	43,43	43,73	44,00
Rear sprocket	16	16	16	16	16	16	16	16	16	16	16

SPCE Front sprocket	75	76	77	78	79	80	75	81	76	82	77
SPCE Rear sprocket	30	30	30	30	30	30	28	30	28	30	28

Development	429,2	432,1	434,3	437,7	439,5	443,2	448,7	454,3	459,8	465,4	470,9

Front sprocket	44,27	44,57	44,80	45,14	45,33	45,71	46,29	46,86	47,43	48,00	48,57
Rear sprocket	16	16	16	16	16	16	16	16	16	16	16

SPCE Front sprocket	83	78	84	79	85	80	81	82	83	84	85
SPCE Rear sprocket	30	28	30	28	30	28	28	28	28	28	28

Development with a 20 x 1.75 tyre

In the table below, find the value indicated at the intersection of the front sprocket and the rear sprockets.

For example : – rear sprocket = 16 and front sprocket = 44. The value to be taken into account = 437.2
– rear sprocket = 17 and front sprocket = 47. The value take into account = 439.5

	CLASSIC FRONT SPROCKET 4-bolt 104 mm - 20 x 1.75 TYRE
REAR SPROCKET	40	41	42	43	44	45	46	47	48	49	50	51	52
18	353,3	362,1	370,9	379,7	388,6	397,4	406,2	415,1	423,9	432,7	441,6	450,4	459,2
17	374,0	383,4	392,7	402,1	411,4	420,8	430,1	439,5	448,8	458,2	467,5	476,9	486,2
16	397,4	407,3	417,3	427,2	437,2	447,1	457,0	467,0	476,9	486,8	496,8	506,7	516,6
15	423,9	434,5	445,1	455,7	466,3	476,9	487,5	498,1	508,7	519,3	529,9	540,5	551,1

To obtain the SPCE equivalence :

In the table, find the value that is closest to the one found in the table above (equal or greater value).

Example with 437.2 : we advise you to use a 28 rear sprocket with a 77 front sprocket.
439,5 : we advise you to use a 30 rear sprocket with an 83 front sprocket.

AllYoogs	SPCE FRONT SPROCKET 4-bolt 104 mm - 20 x 1.75 TYRE
SPCE REAR SPROCKET	75	76	77	78	79	80	81	82	83	84	85
30	397,4	402,7	408,0	413,3	418,6	423,9	429,2	434,5	439,8	445,1	450,4
28	425,8	431,5	437,2	442,8	448,5	454,2	459,9	465,5	471,2	476,9	482,6

Summary with a 20 x 1.75 tyre

Summary of the conversion table.

Reference calculation: (SPCE front sprocket ÷ SPCE cog) x 16 = standard front sprocket

Development = distance covered in cm by the rear wheel during one pedal turn

	SUMMARY STANDARD/SPCE conversion table - 20 x 1.75 TYRE
Development	397,4	402,7	408,0	413,3	418,6	423,9	425,8	429,2	431,5	434,5	437,2

Front sprocket	40,00	40,53	41,07	41,60	42,13	42,67	42,86	43,20	43,43	43,73	44,00
Rear sprocket	16	16	16	16	16	16	16	16	16	16	16

SPCE Front sprocket	75	76	77	78	79	80	75	81	76	82	77
SPCE Rear sprocket	30	30	30	30	30	30	28	30	28	30	28

Development	439,8	442,8	445,1	448,5	450,4	454,2	459,9	465,5	471,2	476,9	482,6

Front sprocket	44,27	44,57	44,80	45,14	45,33	45,71	46,29	46,86	47,43	48,00	48,57
Rear sprocket	16	16	16	16	16	16	16	16	16	16	16

SPCE Front sprocket	83	78	84	79	85	80	81	82	83	84	85
SPCE Rear sprocket	30	28	30	28	30	28	28	28	28	28	28

How to choose your SPCE Cruiser chainring and cog ?

Cruiser Development

To obtain the SPCE equivalence :

The value at the intersection in the tables corresponds to the standard chainring :

– with a 17T cog (table 1)
– with an 18T cog (table 2)

	SPCE CHAINRING for CRUISER IN 17-T COG
REAR SPROCKET	67	68	69	70	71
30	37,97	38,53	39,10	39,67	40,23
28	40,68	41,29	41,89	42,50	43,11

	SPCE CHAINRING for CRUISER IN 18-T COG
REAR SPROCKET	67	68	69	70	71
30	40,20	40,80	41,40	42,00	42,60
28	43,07	43,71	44,36	45,00	45,64

AllYoogs® BMX Chain tensioners

Choose your AllYoogs® tensioner

	SPCK tensioner	UNIVERSEL tensioner	SPCE* chain guide	SPCE* tensioner	tensioner with spring
Chain tension	✅	✅	❌	✅	✅
Hard point absorption	✅	✅	❌	✅	✅
Quick sprocket change	✅	✅	❌	✅	✅
Options	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm
Mounting	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel
Rider	children	children	up to U17	all categories	all categories
Chaîne	SPCK chain quick link / rivet	Standard chain quick link / rivet	SPCE chain quick link / rivet	SPCE chain riveting required	Standard chain quick link / rivet

ℹ️ Important: * The use of one of these two products is mandatory for the operation of our SPCE chain

	SPCK Chain tensioner	Universal Chain tensioner	SPCE Chain guide*	SPCE Chain tensioner*	tensioner with spring
Chain tension	✅	✅	❌	✅	✅
Hard point absorption .	✅	✅	❌	✅	✅
Sprocket change	✅	✅	❌	✅	✅
Options	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm	10 / 15 / 20 mm
Mounting	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel	between the frame and the wheel
Riders category	children	children	up to “U17”	all categories	all categories
Chain	SPCK chain quick link/rivet	standard chain quick link/rivet	SPCE chain quick link/rivet	SPCE chain riveting required	standard chain quick link/rivet

Important: * The use of one of these two products is mandatory for the operation of our SPCE chain.

How do I fit our Universal chain tensioner ?

Our universal chain tensioner allows you to quickly change a minimum of 3 front sprockets without changing the rear base (+1 to -1).

SPCK/Universal Chain tensioner exploded view - AllYoogs

Remove the wheel bolt or axle on the drivetrain side to insert the tensioner between the hub and the frame
Once the tensioner is fitted, retighten the bolt or axle slightly.
Loosen the stop screws slightly so that they are free.
Setting :
- Fit the largest of your front sprockets
- Position the chain, keeping it level with the chainring.
- the stop screws (2,3,5) must not touch the ends of the slide rail. Adjust the chain length if necessary.
- Pass the chain over the tensioner cog to determine a maximum chain length.

Chain tensioner - upper position - Drivetrain BMX Race - AllYoogs — Chain tensioner - upper position

- Remove the large chainring and replace it with smaller one. Pass the chain under the tensioner cog to determine the minimum chain length.

Chain tensioner lower position - Drivetrain BMX Race - AllYoogs — Chain tensioner - lower position

- ⇒ These last 2 steps determine the optimum chain length to exploit the full range of tensioner adjustment.
Cut the chain to the defined length, and fit the desired chainring.
Tilt the tensioner to adjust the tension
Once tensioned, tighten the stop screws (2) against the frame to block the rotation of the tensioner.

Tensioning of the stopper bolts - AllYoogs chain tensioner - BMX Race

Tighten the bolt or wheel axle
Turn the crankset to check the chain tension.
Repeat if necessary.
Turn the crankset to check that the tensioner cog is properly aligned with the drivetrain cog
If this is not the case, you can adjust the alignment by sliding the tensioner cog on the 2 standoffs (6).

Universal chain tensioner - profile view

How do I fit our SPCK chain tensioner?

Our SPCK chain tensioner allows you to quickly change a minimum of 5 front sprockets without changing the rear base (+2 to -2).

Remove the wheel bolt or axle on the drivetrain side to insert the tensioner between the hub and the frame
Once the tensioner is installed, retighten the bolt or axle slightly.
Slightly loosen the stop screws so that they are free.
Setting :
- Fit the largest of your front sprockets
- Position the chain, keeping it level with the chainring.
- the stop screws (2,3,5) must not touch the ends of the slide rail. Adjust chain length if necessary.
- Pass the chain over the tensioner cog to determine a maximum chain length.

- Remove large chainring and replace with smaller one. Pass the chain under the tensioner cog to determine minimum chain length.

- ⇒ These last 2 steps determine the optimum chain length to exploit the full range of tensioner adjustment.

Cut the chain to the defined length, and fit the desired chainring.
Tilt the tensioner to adjust the tension
Once tensioned, tighten the stop screws (2) against the frame to block the rotation of the tensioner.

Tighten bolt or wheel axle
Rotate crankset to check the chain tension.
Repeat if necessary.
Turn the crankset to ensure that the tensioner cog is properly aligned with the drivetrain cog
If this is not the case, you can adjust the alignment by sliding the tensioner cog on the 2 standoffs (6).

Universal chain tensioner - profile view

In case of power transmission problems (crackling, noise on start-up), the tensioner cog should be tangent to the drivetrain cog. In this case, adjust the position of the cog on the tensioner support (4) by placing the screws (1) in the corresponding holes (see illustration below), and place the chain above the tensioner cog (photo 1).

SPCK Chain tensioner adjustment - Drivetrain BMX Race - AllYoogs — SPCK Chain tensioner adjustment

How to fit our universal chain tensioner with spring ?

Our universal chain tensioner with spring allows quick changeover of ± 3 chainrings without changing the rear base (+1 to -1 or more, depending on the frame).

SPCE Chain tensioner - exploded view - AllYoogs — SPCE Chain tensioner - exploded view

The universal chain tensioner with spring is designed for chain line ranging from 43 mm to 46 mm. It is therefore necessary to adjust the cog and the chainring to these values, if necessary by fitting shim washers on the crankset or freewheel body. It comes with a 44 mm setting (standard BMX Race).
Please note that the AllYoogs/Prophecy/Beringer combination requires a 2mm washer on the drivetrain side (supplied with the Beringer crankset).
Once the chain line has been made, it is necessary to adjust the alignment of the tensioner on the cog.

Alignment of tensioner sprocket and drivetrain rear sprocket

With the wheel removed, place the tensioner on the hub (in its housing) to check alignment. This is important to minimize friction.
The shim washers (16,17,27) have different thicknesses (1 / 0.5 / 0.2 mm) to ensure a perfect fit. Unscrew screws (18) to gain access.
By swapping the washers (16,17,27) on either side of the tensioner sprocket (11) / tensioning arm (20) / spring (14) assembly, you can adjust the chain line.
Don't lose the washers (28): none should be removed, as they also serve to guide the tensioning arm (20).

Lateral adjustment of tensioner sprocket for alignment

Once the tensioner has been installed, reassemble the rear wheel, inserting the tensioner between the hub and the frame.
Slightly tighten screws or wheel axle. The tensioner should pivot freely forwards or backwards.
Loosen stop screw (2) if necessary.
Position wheel where required
Adjustment to determine optimum chain length:
- Mount the largest of your front sprockets
- Position the chain, keeping it level with the chainring.
- With the spring released (14), rotate the tensioner to tension the chain. It is then tilted forward. The stop screw (2,25,31) must not touch the end of the slide rail. Adjust chain length if necessary.
- Remove the large front sprocket, replace it with the smaller one and repeat the operation.
- When tensioning the chain, the support must not exceed 90° from the ground. If the tensioner is located towards the rear, place the jockey wheel (24) on the lower part of the tensioning arm (20). To do this, loosen the screw (26), taking care not to lose the washer (21). Place the grooved nut (5) on the lower hole and reassemble the tensioner assembly (24,21,26).
- Re-tension the chain to check the position of the tensioner.

Cut chain to length, fit chainring and quick-link.
With the spring unhooked, tip the tensioner backwards to adjust the initial tension, and the spring will complete the tension. It's best to tension the chain on the hard point.

Universal chain tensioner with spring - view quart AR - BMX Race - AllYoogs

Once the chain is taut, tighten the screws or wheel axle.
Staple the spring and turn the crankset to ensure correct operation. Rotation should be free of mechanical noise. If this is not the case, one of the above operations hasn't been carried out correctly.
Adjust the chain tension using the different notches on the spring.

FAQ - How to fit our SPCE chain tensioner ?

Our universal chain tensioner with spring allows quick changeover of ± 5 chainrings without changing the rear base (+2 to -2 or more, depending on the frame).

To transmit full power, the large tensioner sprocket (11) must be tangent to the drivetrain sprocket. Adjust the position of the large sprocket (11) on the tensioner support (4) by placing screws (29 and 30) in the corresponding holes (see diagram below). Supplied with a 30 cog adjustment.
When handling, be careful not to lose the lock washers (28) clamped between the support (4) and the standoffs (6).

SPCE/Cruiser Chain tensioner adjustment - BMX Race Drivetrain - AllYoogs

The SPCE chain tensioner is designed for chain line ranging from 43 mm to 46 mm. It is therefore necessary to adjust the cog and the chainring to these values, if necessary by fitting shim washers on the crankset or freewheel body. It comes with a 44 mm setting (standard BMX Race).
Please note that the AllYoogs/Prophecy/Beringer combination requires a 2mm washer on the drivetrain side (supplied with the Beringer crankset).
Once the chain line has been made, it is necessary to adjust the alignment of the tensioner on the cog.

With the wheel removed, place the tensioner on the hub (in its housing) to check alignment. This is important to minimize friction.
The shim washers (16,17,27) have different thicknesses (1 / 0.5 / 0.2 mm) to ensure a perfect fit. Unscrew screws (18) to gain access.
By swapping the washers (16,17,27) on either side of the tensioner sprocket (11) / tensioning arm (20) / spring (14) assembly, you can adjust the chain line.
Don't lose the washers (28): none should be removed, as they also serve to guide the tensioning arm (20).

Once the tensioner has been installed, reassemble the rear wheel, inserting the tensioner between the hub and the frame.
Slightly tighten screws or wheel axle. The tensioner should pivot freely forwards or backwards.
Loosen stop screw (2) if necessary.
Position wheel where required
Adjustment to determine optimum chain length:
- Mount the largest of your front sprockets
- Position the chain, keeping it level with the chainring.
- With the spring released (14), rotate the tensioner to tension the chain. It is then tilted forward. The stop screw (2,25,31) must not touch the end of the slide rail. Adjust chain length if necessary.
- Remove the large front sprocket, replace it with the smaller one and repeat the operation.
- When tensioning the chain, the support must not exceed 90° from the ground. If the tensioner is located towards the rear, place the jockey wheel (24) on the lower part of the tensioning arm (20). To do this, loosen the screw (26), taking care not to lose the washer (21). Place the grooved nut (5) on the lower hole and reassemble the tensioner assembly (24,21,26).
- Re-tension the chain to check the position of the tensioner.

Cut chain to length, fit chainring and quick-link.
With the spring unhooked, tip the tensioner backwards to adjust the initial tension, and the spring will complete the tension. It's best to tension the chain on the hard point.

Once the chain is taut, tighten the screws or wheel axle.
Staple the spring and turn the crankset to ensure correct operation. Rotation should be free of mechanical noise. If this is not the case, one of the above operations hasn't been carried out correctly.
Adjust the chain tension using the different notches on the spring.

The Transport

The delivery

Unofficial translation, the French text alone being authoritative.

Attention

Any anomaly concerning the delivery (damage, missing product compared to the delivery order, damaged package, broken products…) must be indicated on the delivery note in the form of “handwritten reserves”, accompanied by the customer’s signature.

The buyer is required to check the condition of the package and the number of packages delivered in the presence of the delivery person. In case of doubt, the buyer is obliged to refuse the parcel and to report these incidents to AllYoogs.

If all products are in stock :

Orders placed before 12:00 am (local time) with tracked mail, Chronopost and Colissimo am leave the same day.
Orders placed after 12:00 am (local time) with tracked mail, Chronopost and Colissimo leave the next day (D+1).
Orders placed with Mondial Relay leave the next day (D+1).

Exceptions:

Orders placed on Fridays after 12:00 am (local time) leave on the following Monday.
Orders placed the day before a public holiday leave on the first working day.

The delivery times communicated by the carriers are given as an indication in working days and don’t engage the responsibility of AllYoogs in case of possible delays.

This doesn’t take into account possible delays due to customs formalities and customs blockages (shipments outside Europe).

If one or more products are on pre-order :

The principle is that an order is always shipped in one go. We therefore wait until all the products are available and physically in stock before sending your order.

So if your order contains available products and products on pre-order. It will be shipped when we receive the stock of the pre-ordered product. The date or period is indicated on the page of the item in question.

DAP incoterms

Unofficial translation, the French text alone being authoritative.

What means DAP incoterms ?

Delivery At Place

As a seller, with when we send with the Incoterms DAP, we will have to :

– Organize and pay transportation costs to the destination agreed with the buyer.
– Clear customs on export goods. Don’t worry, the carriers offered on Allyoogs.com will take care of it.

When sending DAP, the buyer must:

– Take care of import customs clearance. Even if the carriers offered by AllYoogs.com carry out customs clearance, sometimes the customs of the destination country ask the recipient for additional information.
– Pay customs fees and taxes.

In a way, it is like buying a good in his country, because the customs fees he will have to pay are mainly VAT and application fees.

Who pays the customs fees with the Incoterms DAP?

Customs import duties are entirely at the expense of the recipient.

Return and exchange

Unofficial translation, the French text alone being authoritative.

Terms of returns and exchange

The CUSTOMER must, without undue delay and, in any event, no later than fourteen (14) days after communication of his decision to withdraw, return the goods to: 683 rue de l’Abrivado 30132 Caissargues (France).
This period is deemed to have been respected if the CLIENT returns the goods before the expiry of the fourteen-day period.

Return costs

The CUSTOMER shall bear the direct costs of returning the goods.

Condition of the returned good

The PRODUCT must be returned according to the SELLER’s instructions and include all the accessories delivered.

The CLIENT shall only be liable for the depreciation of the good resulting from handling other than that necessary to establish the nature, characteristics and proper functioning of the PRODUCT. In other words, the CLIENT may test the PRODUCT, but may be held liable for any manipulations other than those necessary.

Packaging

The PRODUCTS are packaged in accordance with current transport standards, in order to ensure maximum protection for the PRODUCTS during DELIVERY. CLIENTS must comply with the same standards when returning PRODUCTS. Therefore, the CLIENT is invited to return the PRODUCT that does not suit him/her in its original packaging and in good condition, suitable for resale.