Cobalt Junior race bike from RADIO RACELINE – one of the lightest entry-level Junior bikes at around 8 kg.

Features

• 6061-T6 alloy frame with integrated chain tensioner
• Sealed front hub and integrated headset
• Around 8 kg

Specifications

• Frame: 6061-T6 alloy frame, forged dropouts with int. chaintensioner
• Fork: crmo fork, 1" butted steerer, hi-ten fork legs, 23 mm offset
• Handlebar: 4130 crmo bar, seamless
• Grips: RADIO RACELINE "COBALT" grips, diamond knurling, closed end, flangeless, 130 mm length
• Stem: RADIO RACELINE "COBALT" toploader stem, ext. 40 mm, alloy
• Headset: RADIO RACELINE integrated headset, sealed, 1"
• Brake Lever: PROMAX "XL-378" brake lever, rear
• Brake: PROMAX "MV-87" brake, rear
• Crank: RADIO RACELINE "COBALT" 3pc crank, forged alloy, 155 mm 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
• Driver: ATA freewheel, 16T, 1/2" x 3/32", crmo
• Front Hub: RADIO RACELINE "COBALT" front hub, alloy cnc, fully sealed, 28h, 3/8" crmo axle
• Rear Hub: RADIO RACELINE "COBALT" front hub, alloy cnc, fully sealed, 28h, 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, 22.2 mm, alloy
• Seat Clamp: RADIO RACELINE seat clamp, forged alloy
• Tires: ARISUN "XLR8" tires, 20" x 1-1/8"
• Weight: 8.07 kg / 17.78lbs

Geometry

• Top Tube Length: 18.5"
• Chain Stay Length: 12.85"
• Head Tube Angle: 73°
• Seat Tube Angle: 71°
• Bottom Bracket Height: 10.4"
• Bar Rise: 4.25"
• Bar Width: 24"
• Bar Backsweep: 8°
• Bar Upsweep: 2°