Radio Cobalt Expert 20" BMX Black/Red

The Cobalt line combines proven geometry and dialed components, giving you the best start out of the gate during your first days racing.The Cobalt Expert steps up to a 19.5" toptube, a longer 50mm reach Cobalt stem, a slim Radio pivotal seat and wider 1 3/8" tioga power block tyres.


  • Frame: 6061-T6 aluminium.
  • Fork: crmo, 1 1/8" butted steerer, hi-ten fork legs.
  • Handlebar: 6061-T6 aluminium.
  • Grips: Radio "Zig Zag" grips, 145mm long.
  • Stem: Radio "Cobalt" top loading stem, 50mm reach.
  • Headset: FSA "NO. 28" 1 1/8".
  • Brake lever: Promax "XL-378" aluminium brake rear.
  • Brake: Promax "MV-85" aluminium brake rear.
  • Crank: Radio "Cobalt" forged aluminium 3pc crank, 165mm long.
  • BB: Radio, BSA square taper, sealed.
  • Pedals: Radio "Expert" PC, crmo axle.
  • Chain: KMC Z410 1/2' x 1/8".
  • Sprocket: Radio aluminium, 39t sprocket.
  • Driver: ATA 15t freewheel.
  • Front hub: Radio "Cobalt" aluminium hub, lb, 3/8"s, 28h, crmo axle.
  • Rear hub: Radio "Cobalt" aluminium hub, lb, 3/8"s, 28h, crmo axle, flip flop.
  • Rims: Radio "R450" rim, double wall, 28h.
  • Seat: Radio pivotal seat, no padding.
  • Seat post: Radio pivotal 26.8mm aluminium.
  • Seat clamp: Radio slim aluminium seat clamp.
  • Tyres: Tioga "Power Block" tyres, 20" x 1 3/8" front & rear.
  • Weight: 7.72g / 17.02lbs.
  • This bike is shipped 90% assembled in a sealed box. Inflation of tyres, fitting of pedals, stem and handlebars, front wheel, front brake cable, saddle and seatpost are necessary. Brakes will require adjustment prior to riding.