Radio - Cobalt - Junior

Size Guide
Terms & conditions
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, forged dropouts with int. chain tensioner
FORK cr-mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset
HANDLEBAR 4130 seamless cr-mo
GRIPS Radio, diamond knurling, closed end, flangeless, 130mm length
STEM Radio, Cobalt-toploader, ext. 40mm, alloy
HEADSET Radio, integrated headset, sealed, 1″
BRAKE LEVER PROMAX “XL-378” alloy brake rear
BRAKE PROMAX “MV-87” alloy brake rear
CRANK RADIO “Cobalt” forged alloy 3pc crank, 155mm long
BB Radio, BSA square taper, sealed
PEDALS Radio, Cobalt Junior, nylon
CHAIN KMC, Z6, 1/2″ x 3/32″
SPROCKET RADIO alloy, 40t sprocket
DRIVER ATA, 16T, 1/2″ x 3/32″, cr-mo
FRONT HUB RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle
REAR HUB RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop
RIMS Radio, A-M5, double wall, 28H, alloy f&r
SEAT RADIO “Mini” combo seat
SEAT POST Radio 22.2mm alloy
SEAT CLAMP Radio slim alloy seat clamp
TIRES Arisun, XLR8, 20″x 1-1/8″
WEIGHT 8.07kg/ 17.78lbs
Radio - Cobalt - Junior
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