Radio Race Cobalt Junior BMX Race Bike
£579.99
Radio Race Cobalt Junior BMX Race Bike
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The Cobalt line combines proven geometry and dialled components giving you the best start out of the gate during the first days racing. The Cobalt Junior steps up in size without packing on the pounds at only 8kg, this is one of the lightest Junior entry level bikes out theres. All Cobalt bikes feature fully sealed front hubs and integrated headsets, making them simply unstoppale when comparing price to spec.
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- Complete Tracking On All Orders
- 90 Day Returns Policy
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- *Excludes bulky items
Product Specs
- FRAME MATERIAL: 6061 T6 alloy
- WHEEL SIZE: 20"
- TOP TUBE LENGTH: 18.5"
- CHAIN STAY LENGTH: 12.85"
- HEAD TUBE ANGLE: 73°
- SEAT TUBE ANGLE: 71°
- FORKS: cr-mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset
- BARS: 4130 seamless cr-mo
- STEM: Radio, Cobalt-toploader, ext. 40mm, alloy
- HEADSET: Radio, integrated headset, sealed, 1″
- BRAKE MOUNTS: Welded
- BRAKES: PROMAX “MV-87” alloy brake rear
- FRONT HUB: RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle
- FRONT RIM: Radio, A-M5, double wall, 28H, alloy
- REAR HUB: RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop
- REAR RIM: Radio, A-M5, double wall, 28H, alloy
- TYRES: Arisun, XLR8, 20″x 1-1/8″
- SPROCKET: RADIO alloy, 40t sprocket
- CRANKS: RADIO “Cobalt” forged alloy 3pc crank, 155mm long
- BB: Radio, BSA square taper, sealed
- PEDALS: Radio, Cobalt Junior, nylon
- SEAT: RADIO “Mini” combo seat
- GEARING: 40/16
- WEIGHT: 8.07kg/ 17.78lbs
Product Highlights
- Junior sized BMX bike. Designed for the needs of racers who are 4ft 6" - 5ft 1" (138cm - 155cm)
- A BMX race specific bike great for those riders just getting started
- Strong and lightweight construction
- Sealed bearings throughout
- Integrated headset
NEED MORE HELP UNDERSTANDING BMX RACE BIKES?
We have compiled a complete BMX Race Bike Buyers Guide to help you through the process of finding your perfect race bike. Here at sourcebmx we are all riders so we can offer advice that only 100% rider-owned bmx shops can - just ask!
Click here to view all BMX Race Bikes
BMX RACE BIKE SIZING
The first thing you will need to do is make sure you get the correct size BMX race bike, based on your height. BMX race bikes are sized from Mini (The smallest) through to Pro (adult) sizes. These sizes refer to the overall size of the frames and parts but the wheel diameter will remain the same at 20” despite the width of the tyres varying.Take a ride through our handy guide to find out what size bike best suits you.
Note: there is some overlap between sizes as personal preference comes into the equation.
| Rider Height (ft & in) | Rider Height (cm) | Wheel Width (in) | Bike Size |
|---|---|---|---|
| Up to 4'4" | Up to 130cm | 1 - 1/8 | Micro Mini |
| 4'2" - 4'10" | 127cm - 148cm | 1 - 1/8 | Mini |
| 4'6" - 5'1" | 138cm - 155cm | 1 - 1/8 | Junior |
| 5'0" - 5'4" | 150cm - 165cm | 1 - 3/8 | Expert |
| 5'2" - 5'6" | 155cm - 170cm | 1 - 3/8 | Expert XL |
| 5'3" - 5'8" | 160cm - 175cm | 1.75 | Pro |
| 5'7" - 6'0" | 170cm - 185cm | 1.75 | Pro XL |
| 6'0" + | 185cm + | 1.75 | Pro XL + |
