SPCE Drivetrain kit – Onyx Ultra SS compatible + tools

Kit
SPCE drivetrain kit - onyx + tools - V2026
Kit transmission SPCE - BMX Race - AllYoogs
SPCE drivetrain kit - onyx - rear view - V2026

SPCE Drivetrain kit – Onyx Ultra SS compatible + tools

529,99€ incl. VAT

Our SPCE drivetrain kit for BMX racing, compatible with the Onyx Ultra SS hub + tools, offers unparalleled smoothness and a minimum gain of 2,4% in lap times.

Choose your SPCE drivetrain

  • Select your options :
SPCE BMX Chain - BMX Race Drivetrain - AllYoogs
SPCE BMX Chain

In stock (can be backordered)

Original price was: €45,83.Current price is: €43,39.
SPCE chainring - 4-bolt - BMX Drivetrain - AllYoogs
SPCE BMX front sprocket
Original price was: €74,96.Current price is: €70,98.
SPCE Cog - Onyx compatible - BMX Race - AllYoogs
SPCE BMX cog - Onyx Ultra SS compatible
Original price was: €62,49.Current price is: €59,17.
SPCE chain tensioner - V2026
SPCE Chain tensioner

Available on back-order

Original price was: €208,29.Current price is: €197,22.
SPCE Chain breaker / Riveting tool – BMX Race - AllYoogs®
SPCE Chain breaker / Riveting tool

In stock (can be backordered)

Original price was: €41,63.Current price is: €39,41.
SPCE Freewheel chain whip / Bottom bracket tool (BSA) - AllYoogs
SPCE Freewheel chain whip / Bottom bracket tool

In stock (can be backordered)

Original price was: €33,25.Current price is: €31,48.

Available on back-order

SKU: BDSPCE004EN Categories: , , , Tags: , Brand:

Description

Pack benefits: SPCE drivetrain kit compatible with Onyx Ultra SS hub + tools

Pack contains: 1 chain + 1 front sprocket + 1 stainless steel cog + 1 SPCE chain tensioner + 1 SPCE Chain breaker + 1 SPCE Freewheel chain whip.

The SPCE drivetrain kit is a definite advantage for riders. In fact, our SPCE drivetrain gives a measured minimum gain of between 2,4 and 2.8% on lap times.

We offer a wide range of gear ratios. We therefore recommend that you take a look at our development tables to choose the right front sprocket and increase your performance.

      • Our SPCE drivetrain kit is suitable for all rider categories, including “Elite”.
      • Use of the SPCE chain tensioner or chain guide is mandatory to achieve the advertised results!
      • Drivetrain compatible only with the SPCE range :  chain, front sprocket, rear sprocket and chain tensioner.
      • Specific tools
      • UCI approved
      • Patent pending
      • Drapeau français Designed and developed by AllYoogs®.
Special features :​​

* Our SPCE drivetrain kit fits all BMX frames except the following brands : Meybo HSX, Sunn, GT, 4NIX, the Onyx Pro and the Meybo instant-engagement hubs.

💡To learn more about the concept of our chain kit, we advise you to read our article.

If you need more information on installation and maintenance of our drivetrain kit, you’ll find the answers to your questions in our FAQ.

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SPCE BMX front sprocket

The special shape of the SPCE BMX front sprocket is the result of optimisation using Finite Element Method (FEM) simulation. This increases the resistance and considerably reduces the weight.

        • Axis distance : 104 mm – 4-bolt fixing for SPCE BMX chain
        • Size : 75 to 85 teeth – 5 mm
        • Weight : 97 g to 117 g depending on the number of teeth

        Choose your SPCE front sprocket

The AllYoogs® SPCE front sprockets are machined by CNC in France from 7075-T6 aluminium (stronger than 6061). This material guarantees a lightness and above all a very high resistance of the product thanks to the hard anodising. This treatment gives our products a longer life.

SPCE BMX stainless steel cog – onyx compatible

The SPCE stainless steel cog is machined by CNC in France. This material guarantees lightness and, above all, very high product resistance thanks to heat treatment. This treatment increases hardness and durability.

        • Type: rear sprocket for onyx single speed cassette
        • Size : 28 and 30 teeth – 5 mm
        • Weight : 39 to 43 g depending on the number of teeth

        Choose your SPCE cog

SPCE chain tensioner

Our SPCE chain tensioner fits on most* BMX Race frames to ensure constant chain tension and therefore solving the recurring problems riders have had for years. Our product is discreet, compact and designed for single speed.

Benefits of the AllYoogs SPCE chain tensioner :

  • Tensioner that absorbs the tightening point and ensures constant chain tension thanks to the spring and stop.
  • It ensures that the chain is permanently engaged in all the teeth of the rear sprocket, allowing high power transmission.
  • Change the front sprocket in a few minutes, without any effort !
  • Tension the chain without moving the rear wheel.
  • The original tensioners simply adjust the rear wheel position and no longer interfere with the chain tension.
  • Quick change of the front sprocket from 2 to 3 teeth (+1 and -1 minimum).
  • The large size of the bearing reduces its rotational speed, which considerably increases its life and load capacity. It’s diameter also limits vibrations.
  • Available in 10 mm bolt and 12, 15 and 20 mm axles
  • Tensioner sprocket made of low-friction, low-noise technical plastic.
  • The bracket fits between the frame and the wheel.
  • Completely stainless
  • Easy to maintain and remove.
  • The use of the SPCE chain tensioner is mandatory to obtain the results announced for the SPCE drivetrain kit!

Any questions about fitting our SPCE chain tensioner? Have a look at our FAQ!

* Our SPCE drivetrain kit fits all BMX frames except the following brands : Meybo HSX, GT, 4NIX, the Onyx Pro and the Meybo instant-engagement hubs.

How to choose your SPCE drivetrain kit ?

 
 
1. Development calculated in mm 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 SPROCKET404142434445
18374.2383.6392.9402.3411.6421,0
17396.2406.1416.0425.9435.8445,7
16421.0431.5442.0452,5463,1473,6
15449,0460,3471,5

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.

AllYoogsSPCE FRONT SPROCKET 4-bolt 104mm – 20 x 1.3/8 TYRE
SPCE REAR SPROCKET757677787980
30421,0426,6432,2437,8443,4449,0

 
 
 
2. Development calculated in mm 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 SPROCKET40414243444546474849505152
18344,7353,3361,9370,6379,2387,8396,4405,0413,6422,3430,9439,5448,1
17365,0374,1383,2392,4401,5410,6419,7428,9438,0447,1456,2465,4474,5
16387,8397,5407,2416,9426,6436,3446,0455,7465,4475,0484,7494,4504,1
15413,6424,0434,3444,7455,0465,4475,7486,0496,4506,7517,1527,4537,7

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.

AllYoogsSPCE FRONT SPROCKET 4-bolt 104 mm – 20 x 1.6 TYRE
SPCE REAR SPROCKET7576777879808182838485
30387,8393,0398,1403,3408,5413,6418,8424,0429,2434,3349,5
28415,5421,0426,6432,1437,7443,2448,7454,3459,8465,4470,9

3.  Summary calculated in mm with a 20 x 1.6 tyre inflated to 6 bars

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
Development387,8393,0398,1403,3408,5413,6415,5418,8421,0424,0426,6
Front sprocket40,0040,5341,0741,6042,1342,6742,8643,2043,4343,7344,00
Rear sprocket1616161616161616161616
SPCE Front sprocket7576777879807581768277
SPCE Rear sprocket3030303030302830283028
Development429,2432,1434,3437,7439,5443,2448,7454,3459,8465,4470,9
Front sprocket44,2744,5744,8045,1445,3345,7146,2946,8647,4348,0048,57
Rear sprocket1616161616161616161616
SPCE Front sprocket8378847985808182838485
SPCE Rear sprocket3028302830282828282828

4. Development calculated in mm 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 SPROCKET40414243444546474849505152
18353,3362,1370,9379,7388,6397,4406,2415,1423,9432,7441,6450,4459,2
17374,0383,4392,7402,1411,4420,8430,1439,5448,8458,2467,5476,9486,2
16397,4407,3417,3427,2437,2447,1457,0467,0476,9486,8496,8506,7516,6
15423,9434,5445,1455,7466,3476,9487,5498,1508,7519,3529,9540,5551,1

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.

AllYoogsSPCE FRONT SPROCKET 4-bolt 104 mm – 20 x 1.75 TYRE
SPCE REAR SPROCKET7576777879808182838485
30397,4402,7408,0413,3418,6423,9429,2434,5439,8445,1450,4
28425,8431,5437,2442,8448,5454,2459,9465,5471,2476,9482,6

 
 
 
 
5.  Summary calculated in mm with a 20 x 1.75 tyre inflated to 6 bars

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 1.75 TYRE
Development397,4402,7408,0413,3418,6423,9425,8429,2431,5434,5437,2
Front sprocket40,0040,5341,0741,6042,1342,6742,8643,2043,4343,7344,00
Rear sprocket1616161616161616161616
SPCE Front sprocket7576777879807581768277
SPCE Rear sprocket3030303030302830283028
Development439,8442,8445,1448,5450,4454,2459,9465,5471,2476,9482,6
Front sprocket44,2744,5744,8045,1445,3345,7146,2946,8647,4348,0048,57
Rear sprocket1616161616161616161616
SPCE Front sprocket8378847985808182838485
SPCE Rear sprocket3028302830282828282828

 
 
 
 

Additional information

Weight 0,100 kg
Dimensions 28 × 27,5 × 5,5 cm
Size

78 teeth, 79 teeth, 83 teeth
Size

27 teeth
Bolt / Axles

10 mm, 12 mm, 15 mm, 20 mm

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