SPCE BMX cog – Onyx Ultra SS compatible

SPCE Cog - Onyx compatible - BMX Race - AllYoogs

SPCE BMX cog – Onyx Ultra SS compatible

62,49 €

The SPCE stainless steel cog for BMX racing is a performance booster that doesn’t compromise on quality!

    • Type : rear sprocket for onyx Single-speed cassette
    • Size : 28 and 30 teeth – 5 mm
    • Weight : 39 to 43 g
    • Colour : silver
    • Material : stainless steel
    • Treatment: heat-treated
    • Delivery time: 6 weeks for preorders/out-of-stock items

Choose your SPCE rear sprocket

SKU: BPDRSPCE100 Categories: , , , Tags: , Brand:
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Description

SPCE BMX Cog Ultra SS Compatible – Lightweight and High-Performance

The SPCE AllYoogs® BMX cog compatible with the Ultra SS hub perfectly complements the SPCE chain kit to ensure a smooth, reliable, and high-performance drivetrain. The heat-treated stainless steel cog provides exceptional hardness and long service life without compromising power transfer, delivering more responsive and efficient pedaling.

It is compatible with “Onyx ultra SS” freewheel hub, ensuring easy installation on most BMX Race setups.

🚀 Benefits for BMX Race riders

  • Smooth and silent transmission: the chain stays perfectly engaged, reducing efficiency losses
  • Optimized performance: when combined with the SPCE chain and tensioner, improves measured lap times by at least 2.4% to 2.8%
  • Vibration and impact resistance: designed to handle explosive starts and repeated stresses of BMX Race tracks
  • Quick and easy installation: compatible only with SPCE components, easy to install and maintain

🔧 Premium design and materials

  • High-precision CNC machining at the spline to reduce weight while maintaining optimal power transfer
  • Heat-treated stainless steel: combines light weight, high strength, and extended durability
  • Resistant to vibrations, impacts, and extreme forces from explosive starts
  • Patented product and UCI approved
  • Drapeau françaisDesigned and developed by AllYoogs®. Made in France

⚙️ Compatibility and installation

  • Mandatory: must be used with the SPCE chain, chainring, and tensioner/guide to fully exploit performance
  • Fits most BMX Race frames, except: Meybo HSX, GT, 4NIX, and Onyx Pro or Meybo instant-engagement hubs
  • Use of specific SPCE tools is recommended for precise installation

💡 Check out our dedicated article on the SPCE chain kit to better understand its benefits and overall operation.

🌍 Join the AllYoogs community: follow us on social media and discover all our BMX Race innovations.

How to choose your SPCE drivetrain ?

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

  2. Development calculated in mm with a 20 x 1.6 tyre

  3. Summary with a 20 x 1.6 tyre

  4. Development calculated in mm with a 20 x 1.75 tyre

  5. Summary with a 20 x 1.75 tyre

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 tyre 20 x 1.75 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

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

Additional information

Weight 0,056 kg
Dimensions 24 × 18 × 1 cm
Size

28 teeth, 30 teeth

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