Radio Xenon Junior 20 Inch Bike

The Radio Xenon Junior steps things up for riders ready to go faster, push harder, and get serious on the track. Built around a hydroformed 6061-T6 alloy frame with disc-ready dropouts, it’s light, stiff, and made to handle proper race pace. The full crmo fork keeps things solid up front.
Loaded with Radio Raceline Xenon parts, this thing is anything but entry-level—3pc cranks, sealed cassette hub, and a dialled drivetrain that delivers smooth, efficient power every lap. The Tioga Power Block tyres grip hard out of the gate, and the rear disc brake brings reliable stopping when it matters.

At just 7.78kg, it’s still crazy light for its size, making it perfect for riders progressing through the ranks without being held back. The Xenon Junior is built to go fast, stay smooth, and keep the good times rolling every session.

Frame - Hydroformed 6061-T6 alloy frame, forged & disc brake mount ready dropouts
Fork - Crmo fork, 1" butted steerer, crmo fork legs, 23mm offset
Bars - 6061-T6 alloy bar
Grips - Radio Raceline Xenon grips, diamond knurling, clamp-on grip, 115mm length
Stem - Arise Cobalt toploader stem, ext. 40mm, alloy
Headset - Radio Raceline integrated headset, sealed, 1"
Lever - Arise Xenon disc brake lever
Brakes - Arise Xenon disc brake rear
Cranks - Radio Raceline Xenon 3pc crank, forged alloy, CNC machined, 155mm length
BB - Radio Raceline bb set, BSA square taper, sealed
Pedals - Radio Raceline Xenon Junior pedal, alloy
Chain - KMC Z6 chain, 1/2" x 3/32"
Sprocket - Radio Raceline sprocket, 40T, alloy
Freewheel/Driver - Radio Raceline driver, 16T, 1/2" x 3/32", sealed cassette
Front Hub - Arise Bravo front hub, alloy CNC, fully sealed, 28h, 3/8" female crmo axle
Rear Hub - Arise Alfa rear hub, alloy CNC, fully sealed, 28h, disc brake cassette, 3/8" crmo axle
Rims - Arise Clipper Junior rim, sleeved joint, 28h, alloy
Seat - Box Two combo seat
Seat Clamp - Arise Xenon seat clamp, quick-release, alloy
Tires - Tioga Power Block tyres, 20" x 1-1/8"
Weight - 7.78kg / 17.16lbs

Frame / Bar Geometry
Top Tube Length - 18.6"
Chain Stay Length - 13.4"
Head Tube Angle - 73.5°
Seat Tube Angle - 71°
Bottom Bracket Height - 10.6"

Bar Rise - 4.25"
Bar Width - 24"
Bar Backsweep - 8°
Bar Upsweep - 2°