Note : Please note that specifications are subject to change without notice, based on component availability and other factors.
The BMX Race Cobalt Junior combines proven geometry and high-end components to offer the youngest riders their first sensations in BMX. With only 8 kg, it is one of the lightest Junior BMX bikes.
The Cobalt Junior is a real machine, unbeatable in terms of quality / price ratio.
The + product:
- Aluminum frame and CroMo steel fork.
- Promax MV-87 brakes.
- Radio Cobalt 3-piece aluminum crankset.
Details:
| Frame | Aluminum: 6061 T6 alloy, forged dropouts with int. chain tensioner |
| Fork | Steel: cr-mo, 1? butted steerer tube, hi-ten fork legs, 23mm offset |
| Sprocket | RADIO alloy, 40 tooth sprocket |
| Chain | KMC, Z6, 1/2? x 3/32? |
| Crankset | RADIO ?Cobalt? forged alloy 3pc crank, 155mm long |
| Bottom bracket | Radio, BSA square taper, sealed |
| Brake levers | PROMAX ?XL-378? alloy brake rear |
| Brakes | PROMAX ?MV-87? alloy brake rear |
| Wheels | Rims: Radio, A-M5, double wall, 28H, alloy / Hubs: (F) RADIO ?Cobalt? alloy CNC hub, fully sealed, 3/8? S, 28h, crmo axle / (R): RADIO ?Cobalt? alloy CNC hub, fully sealed, 3/8? S, crmo axle, 28h, flip flop |
| Tires | Arisun, XLR8, 20? X 1-1 / 8? |
| Handlebar | 4130 seamless cr-mo, Rise 4.25 ?, Width 24 ?, Backsweep 8 °, Upsweep 2 ° |
| Grips | Radio, diamond knurling, closed end, flangeless, 130mm length |
| Stem | Radio, Cobalt-toploader, ext. 40mm, alloy |
| Headset | Radio, integrated headset, sealed, 1? |
| Saddle | RADIO ?Mini? combo seat |
| Seatpost | Radio 22.2mm alloy |
| Pedals | Radio, Cobalt Junior, nylon |
| Total weight | 8.07 kg |
| Colors | Cyan |
Geometries:

| Wheel size (inch) | 20 “ |
| Seat tube | — |
| Upper tube | 18.5 “ |
| Base length | 12.85 “ |
| Steering angle (°) | 73 |
| Seat tube angle (°) | 71 |
| Wheelbase | — |
| Bottom bracket height | 10.4 “ |
MORE INFORMATION
| Frame | Aluminum: 6061 T6 alloy, forged dropouts with int. chain tensioner |
| Fork | Steel: cr-mo, 1? butted steerer tube, hi-ten fork legs, 23mm offset |
| Sprocket | RADIO alloy, 40 tooth sprocket |
| Chain | KMC, Z6, 1/2? x 3/32? |
| Crankset | RADIO ?Cobalt? forged alloy 3pc crank, 155mm long |
| Bottom bracket | Radio, BSA square taper, sealed |
| Brake levers | PROMAX ?XL-378? alloy brake rear |
| Brakes | PROMAX ?MV-87? alloy brake rear |
| Wheels | Rims: Radio, A-M5, double wall, 28H, alloy / Hubs: (F) RADIO ?Cobalt? alloy CNC hub, fully sealed, 3/8? S, 28h, crmo axle / (R): RADIO ?Cobalt? alloy CNC hub, fully sealed, 3/8? S, crmo axle, 28h, flip flop |
| Tires | Arisun, XLR8, 20? X 1-1 / 8? |
| Handlebar | 4130 seamless cr-mo, Rise 4.25 ?, Width 24 ?, Backsweep 8 °, Upsweep 2 ° |
| Grips | Radio, diamond knurling, closed end, flangeless, 130mm length |
| Stem | Radio, Cobalt-toploader, ext. 40mm, alloy |
| Headset | Radio, integrated headset, sealed, 1? |
| Saddle | RADIO ?Mini? combo seat |
| Seatpost | Radio 22.2mm alloy |
| Pedals | Radio, Cobalt Junior, nylon |
| Total weight | 8.07 kg |
| Colors | Cyan |
| Wheel size (inch) | 20 “ |
| Seat tube | — |
| Upper tube | 18.5 “ |
| Base length | 12.85 “ |
| Steering angle (°) | 73 |
| Seat tube angle (°) | 71 |
| Wheelbase | — |
| Bottom bracket height | 10.4 “ |
| Gender | Not Specified |
| collection | 2021 |






















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