SPCX BMX cog

SPCX cog- BMX drivetrain - AllYoogs

SPCX BMX cog

33,33€

BMX CHILDREN’S PARTS

For    tracks – no european

The SPCX BMX cog for KIDS is super light, a definite advantage for the performance.

      • Type : cog for Single-speed cassette
      • Size : 28 to 32 teeth
      • Weight : 17 to 21 g
      • Colour : golden
      • Material : 7075 aluminium
      • Surface treatment: hard anodised
      • Delivery times for pre-orders : 5/6 weeks

Choose your SPCX cog

SKU: BPDRSPCX000EN Categories: , , , Tags: , Brand:
SPCX chain kit - 4-bolt + tools
SPCX drivetrain Kit - 4 bolt + tools
248,95€ incl. VAT
SPCX chain kit - 4-bolt + chain guide + tools
SPCX chain Kit - 4 bolt + chain guide + tools
347,45€ incl. VAT
SPCX drivetrain kit - 4 bolt
SPCX drivetrain Kit - 4 bolt
164,75€ incl. VAT

Description

How to Choose Your SPCX BMX Cog

First of all, thanks to its optimized design, the SPCX BMX cog by AllYoogs reduces weight without compromising performance. Moreover, it is compatible with all cassette-type freewheel bodies. Its CNC machining, carried out in France, ensures exceptional quality and increased durability.

A Chain Kit Designed for Performance

The SPCX chain kit is a real asset for young riders. Its innovative drivetrain delivers a minimum measured time gain of 2.4 to 2.8%, while making it easier to learn starts, manuals, and other essential techniques.

Compatibility & Technical Limits

  • Our SPCX cog can be fitted to BMX bikes up to frame size “EXPERT XL”
  • From the “PRO” frame, our children’s kit continues with the SPCE kit (same chain and tools).
  • The SPCE chain is only compatible with SPCX and SPCE race parts.
  • Our chain breaker is specific and the only compatible one on the market to lengthen or shorten the SPCE chain.
  • Patent Pending
  • Designed and developed by AllYoogs®. Made in France


Our SPCX drivetrain kit fits all BMX frames except the following brands : Meybo HSX, Supercross Vision F1 and RSX, GT, 4NIX and the Meybo instant-engagement hubs.

Choose the Ideal Configuration

Finally, we offer a wide range of sprocket sizes adapted for children, allowing them to optimize their performance on the track. To go further, consult our development charts to select the ideal SPCX sprocket.

Choose your SPCX rear sprocket

💡For more details on our chain kit concept, we recommend reading our article.
If you need more information on installation and maintenance BMX chain kit, you’ll find answers to your questions in our FAQ.

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How to choose your SPCX BMX cog ?

  • With a 4-bolt chainring

  1. Development calculated in mm with a 20 x 1.1/8 tyre

  2. Development calculated in mm with a 20 x 1.3/8 tyre

  • With a 5-bolt chainring

  1. Development calculated in mm with a 20 x 1.1/8 tyre

  2. Development calculated in mm with a 20 x 1.3/8 tyre

With a 4-bolt chainring

1.  Development calculated in mm with a 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 SPROCKET323334353637
38
39404142434445
18289,3298,3307,4316,4325,5334,5343,6352,6361,6370,7379,7388,8397,8 406,8
17306,3315,9325,5335,0344,6354,2363,8373,3382,9
392,5402,0411,6421,2 430,8
16325,5335,6345,8356,0
366,2376,3386,5396,7406,8417,0427,2437,3447,5457,7
15347,2358,0368,9379,7390,6401,4412,3423,1434,0444,8455,7

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.

AllYoogsSPCX FRONT SPROCKET 4-bolt 104mm – 20 x 1.1/8 TYRE
SPCX REAR SPROCKET71727374757677
32361,1366,2371,2376,3381,4386,5391,6
31372,7378,0383,2388,5393,7399,0404,2
30385,1390,6396,0401,4406,8412,3417,7
29398,4404,0409,6415,3420,9426,5432,1
28412,6418,5424,3430,1435,9441,7447,5

 
 
 

2.  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 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 SPROCKET323334353637
38
39404142434445
18299,4308.7318.1327.4336.8346.1355.5364.8374.2383.6392.9402.3411.6421,0
17317.0326.9336.8346.7356.6366.5376.4386.3396.2406.1416.0425.9435.8445,7
16336.8347.3357.8368.4378.9389.4399.9410.4421.0431.5442.0452,5463,1473,6
15359.2370.5381.7392.9404.1415.4426.6437.8449,0460,3471,5

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.

AllYoogsSPCX FRONT SPROCKET 4-bolt 104mm – 20 x 1.3/8 TYRE
SPCX REAR SPROCKET71727374757677
32373,6378,9384,1389,4394,7399,9405,2
31385,7391,1396,5402,0407,4412,8418,3
30398,5404,1409,7415,4421,0426,6432,2
29412,3418,1423,9429,7435,5441,3447,1
28427,0433,0439,0445,0451,0457,1463,1

 

With a 5-bolt chainring

1.  Development calculated in mm with a 20 x 1.1/8 tyre

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

Example: cog = 17 and chainring = 41. The value to take into account = 392,5

CLASSIC FRONT SPROCKET 5-bolt 110 mm – 20 x 1.1/8 TYRE
REAR SPROCKET323334353637
38
39404142434445
18289,3298,3307,4316,4325,5334,5343,6352,6361,6370,7379,7388,8397,8 406,8
17306,3315,9325,5335,0344,6354,2363,8373,3382,9
392,5402,0411,6421,2 430,8
16325,5335,6345,8356,0
366,2376,3386,5396,7406,8417,0427,2437,3447,5457,7
15347,2358,0368,9379,7390,6401,4412,3423,1434,0444,8455,7

To obtain the SPCX 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 392,5: the same (or closest) value is 392,5. So the choice is a 32 cog with a 76 chainring.

AllYoogsSPCX FRONT SPROCKET 5-BOLT 110 mm – 20 x 1.1/8 TYRE
SPCX REAR SPROCKET71727374757677
32361,1366,2371,2376,3381,4386,5391,6
31372,7378,0383,2388,5393,7399,0404,2
30385,1390,6396,0401,4406,8412,3417,7
29398,4404,0409,6415,3420,9426,5432,1
28412,6418,5424,3430,1435,9441,7447,5

2.  Development calculated in mm with a 20 x 1.3/8 tyre

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

Example : cog = 16 and chainring = 42. The value to take into account = 442,0

CLASSIC FRONT SPROCKET 5-bolt 110 mm – 20 x 1.3/8 TYRE
REAR SPROCKET323334353637
38
39404142434445
18299,4308.7318.1327.4336.8346.1355.5364.8374.2383.6392.9402.3411.6421,0
17317.0326.9336.8346.7356.6366.5376.4386.3396.2406.1416.0425.9435.8445,7
16336.8347.3357.8368.4378.9389.4399.9410.4421.0431.5442.0452,5463,1473,6
15359.2370.5381.7392.9404.1415.4426.6437.8449,0460,3471,5

To obtain the SPCX 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 442,0 : the closest values are : 439,0 and 445,0 The smallest cog is 28, so the choice is a 28 cog with a 74 chainring.

AllYoogsSPCX FRONT SPROCKET 5-BOLT 110 mm – 20 x 1.3/8 TYRE
SPCX REAR SPROCKET71727374757677
32373,6378,9384,1389,4394,7399,9405,2
31385,7391,1396,5402,0407,4412,8418,3
30398,5404,1409,7415,4421,0426,6432,2
29412,3418,1423,9429,7435,5441,3447,1
28427,0433,0439,0445,0451,0457,1463,1

Depending on your child’s characteristics (difficulty starting, saturation…), we can be even more precise in the choice of our SPCX chain kit. Don’t hesitate to contact us by phone or whatsapp, we are here to help you!

Additional information

Weight 0,040 kg
Dimensions 15 × 10 × 1 cm
Size

28 teeth, 29 teeth, 30 teeth, 31 teeth, 32 teeth

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