Radio Race Cobalt Pro BMX Race Bike 2021

Regular price $559.99 Out of Stock

Radio Race Cobalt Pro BMX Race Bike 2021

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Regular price $559.99 Out of Stock
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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 line took off so well that Radio decided to add a Pro size for 2021 allowing more riders to enjoy one of the best entry level racers out there. All Cobalt bikes feature fully sealed front hubs and integrated headsets, making them simply unstoppale when comparing price to spec.

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Product Specs
  1. FRAME MATERIAL: 6061 T6 alloy
  2. WHEEL SIZE: 20"
  3. TOP TUBE LENGTH: 20.75"
  7. FORKS: cr-mo, 1-1/8″ butted steerer tube, hi-ten fork legs, 30mm offset
  8. BARS: 4132 seamless cr-mo
  9. STEM: Radio, Cobalt-toploader, ext. 50mm, alloy
  10. HEADSET: FSA, No.28, integrated headset, sealed, 1-1/8″
  11. BRAKE MOUNTS: Welded
  12. BRAKES: PROMAX “TX-117” alloy brake rear
  13. FRONT HUB: Radio, Cobalt, alloy cnc, fully sealed, 3/8″ cr-mo axle
  14. FRONT RIM: Radio, BX-32, double wall, 32H, alloy
  15. REAR HUB: Radio, Cobalt, alloy cnc, fully sealed, 32H, flip flop, 3/8″ cr-mo axle
  16. REAR RIM: Radio, BX-32, double wall, 32H, alloy
  17. TYRES: Arisun, XLR8, front 20″x1.95″ / rear 20″x1.75″
  18. SPROCKET: RADIO alloy, 44t sprocket
  19. CRANKS: RADIO “Cobalt” forged alloy 3pc crank, 175mm long
  20. BB: Radio, BSA square taper, sealed
  21. PEDALS: Radio, Cobalt Pro, alloy
  22. SEAT: Radio Cobalt Pro, combo seat
  23. GEARING: 44/16
  24. WEIGHT: 9.95kg/ 21.93lbs

Product Highlights
  • Pro sized BMX race bike for riders who need a full size BMX. Typically suited to riders 5ft 3" to 5ft 8" (160cm - 175cm)
  • A BMX race specific bike great for those riders just getting started
  • Strong and lightweight construction
  • Sealed bearings throughout
  • Integrated headset


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


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 +

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