SPCE BMX front sprocket

SPCE chainring - 4-bolt - BMX Drivetrain - AllYoogs

SPCE BMX front sprocket

74,96 €

The SPCE BMX front sprocket, a performance advantage without sacrificing quality and design !

    • Centre distance : 104 mm – 4-bolt fixing for SPCE BMX chain
    • Size : 75 to 85 teeth – 5 mm
    • Weight : 97 g to 117 g
    • Colour : gold
    • Material : Aluminium 7075
    • Surface treatment : Hard anodised
    • Delivery time: 6 weeks for preorders/out-of-stock items

Choose your SPCE front sprocket

SKU: BPDFSPCE500 Categories: , , , Tags: , , , Brand:
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Description

SPCE BMX Chainring – Performance and Precision for BMX Race

The SPCE BMX chainring was designed to work in perfect synergy with the SPCE chain kit and the SPCE chain tensioner or chain guide. Every component of the SPCE kit has been engineered to deliver a smooth, consistent, and ultra-durable BMX Race drivetrain, even under the most intense loads.

🔧 Optimized design and premium materials

  • FEM-optimized design: the 4-bolt mounting shape maximizes strength while reducing weight.
  • CNC-machined 7075 aluminum: stronger than 6061 aluminum and combined with hard anodizing, it ensures exceptional durability and longevity.
  • Full compatibility with the SPCE chain kit: the chainring, sprocket, and SPCE tensioner/guide are designed to work in perfect harmony.

🚀 Benefits for riders

  • Consistent power transfer: the chain remains perfectly engaged, even under high power.
  • Measured performance gain of at least 2.4 to 2.8% thanks to reduced friction and optimal chain tension.
  • Easy gear ratio changes: compatible with +2 / −2 tooth adjustments when used with the SPCE tensioner.
  • Versatility: suitable for all rider categories, including Elite.

⚙️ Technical specifications

ℹ️ Compatibility and installation

Fits most BMX Race frames, except Meybo HSX, GT, 4NIX, and Onyx Pro or Meybo hubs with instant engagement.

💡 To learn more about the concept behind our chain kit, we recommend reading our article.

🌍 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

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 in mm calculated with tyre 20 x 1.75 inflated to 6 bar

Overall summary of the conversion table.

Reference calculation: (SPCE 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 0,180 kg
Dimensions 31 × 23 × 3 cm
Size

75 teeth, 76 teeth, 77 teeth, 78 teeth, 79 teeth, 80 teeth, 81 teeth, 82 teeth, 83 teeth, 84 teeth, 85 teeth

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