The cobalt line combines proven geometry and dialled components giving you the best start out of the gate during your 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 there. Fresh out of the box for 2021 with incredible new paint and graphics, you’ll be able to spot a cobalt on the track very easily. All cobalt bikes now feature full sealed front hubs and integrated headsets, making them simply unbeatable when comparing price to spec. The cobalt is one seriously unstoppable machine.

Frame: 6061-T6 alloy frame, forged dropouts with int. chaintensioner
Fork: crmo fork, 1" butted steerer, hi-ten fork legs, 23mm offset
Bars: 4130 crmo bar, seamless
Grips: RADIO RACELINE "COBALT" grips, diamond knurling, closed end, flangeless, 130mm length
Stem: RADIO RACELINE "COBALT" toploader stem, ext. 40mm, alloy
Headset: RADIO RACELINE integrated headset, sealed, 1"
Lever: PROMAX "XL-378" brake lever, rear
Brakes: PROMAX "MV-87" brake, rear
Cranks: RADIO RACELINE "COBALT" 3pc crank, forged alloy, 155mm length
BB: RADIO RACELINE bb set, BSA square taper, sealed
Pedals: RADIO RACELINE "COBALT JUNIOR" pedal, nylon
Chain: KMC "Z6" chain, 1/2" x 3/32"
Sprocket: RADIO RACELINE sprocket, 40T, alloy
Freewheel/Driver: ATA freewheel, 16T, 1/2" x 3/32", crmo
Front Hub: RADIO RACELINE "COBALT" front hub, alloy cnc, fully sealed, 28T, 3/8" crmo axle
Rear Hub: RADIO RACELINE "COBALT" rear hub, alloy cnc, fully sealed, 28T, flip flop, 3/8" crmo axle
Front Rim: RADIO RACELINE "A-M5" rim, double wall, 28H, alloy
Rear Rim: RADIO RACELINE "A-M5" rim, double wall, 28H, alloy
Seat: RADIO RACELINE "MINI" combo seat
Seat Post: RADIO RACELINE seat post, 22.2mm, alloy
Seat Clamp: RADIO RACELINE seat clamp, forged alloy
Tyres: ARISUN "XLR8" tires, 20" x 1-1/8"