Radio Cobalt Junior Bike

The Radio Raceline has continued its upwards trajectory in the “”ready to race”” category of complete off-the-shelf race bikes. Every one of their bikes in the Cobalt range can go from the shop to the podium with ease, and is the perfect entry level race bike for your young rider.

This beast is stacked full of loads of epic Radio parts to ensure a ride like no other! Radio Raceline Cobalt Grips provide loads of grip for your hands, The Radio Raceline Cobalt Hubs laced up to double walled Radio Raceline A-M5 Rims, which means they can take a beating you shredder starts to send the jumpks. After all, every BMX kids just wants to jump stuff, and this bike will take that punishment as they learn the ropes of BMX racing. 

Fresh out of the box for with incredible 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.

We sell loads of these complete race bikes, and for good reason, awesome build quality at this price point makes them extremely great value and will last a season or two before your racer grows into the next size.

 

Key Specs:

• TT Length: 18.5″”
• BB Height: 10.4″”
• Gearing: 40 x 16
• Gear Ratio: 49.75″”
• Crank Length: 155mm
• Tyres: 20 x 1-1/8
• Weight: 8.07kg

Size	18.5TT
Frame	6061-T6 alloy frame, forged dropouts with int. chain tensioner
Fork	Cr-Mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset
Headset	FSA “”No.28″” integrated headset, sealed, 1″”
Stem	Radio Raceline “”COBALT”” top loader stem, ext. 40mm, alloy
Handlebar	4130 CrMo bar, seamless
Grips	Radio Raceline “”COBALT”” grips, diamond knurling, closed end, flangeless, 130mm length
Brake Lever	Promax “”XL-378″” brake lever, rear
Rear Brake	Promax “”MV-87″” brake, rear
Crank	Radio Raceline “”COBALT”” 3pc crank, forged alloy, 155mm length
Chainring	Radio sprocket, 40T, alloy
Bottom Bracket	Radio Raceline BB, BSA square taper, sealed
Pedals	Radio Raceline Junior, nylon
Chain	KMC “”Z6″” chain, 1/2″” x 3/32″”
Front Hub	Radio Raceline “”COBALT”” front hub, alloy cnc, fully sealed, 28H, 3/8″” crmo axle
Rear Hub	Radio Raceline “”COBALT”” rear hub, alloy cnc, fully sealed, 28H, flip flop, 3/8″” crmo axle
Rear Cog	ATA freewheel, 16T, 1/2″” x 3/32″”, crmo
Rims	Radio Raceline “”A-M5″” rim, double wall, 28H, alloy
Spokes	Radio Raceline “”A-M5″” rim, double wall, 28H, alloy
Tyres	Arisun “”XLR8″” TYREs, 20″” x 1-1/8″”
Seat	Radio “Mini” combo seat
Seat Clamp	Radio slim alloy seat clamp
Seat Post	Radio seat post, 25.4mm, alloy
Gearing / Ratio	40×16 / 49.75″”

 
FRAME / BAR GEOMETRY
 

TOP TUBE LENGTH 18.5″
CHAIN STAY LENGTH 12.85″
HEAD TUBE ANGLE 73°
SEAT TUBE ANGLE 71°
BOTTOM BRACKET HEIGHT 10.4″

HANDLEBAR GEOMETRY

RISE 4.25″
WIDTH 24″
BACKSWEEP 8°
UPSWEEP 2°