Buying a bike for your child can be daunting, that’s why Radio developed the zuma range to make it that much easier. Based around the concept of a kid sized mtb bike, the zuma bikes are incredibly lightweight, with carefully researched geometry and designed specifically around smaller riders as the perfect balance between a bike for a child to learn the basics on, and a more advanced mtb for off-road riding conditions for weekend rides with the parents.

Frame: RADIO "ZUMA 20" frame, 6061-T6 alloy
Fork: RADIO "ZUMA 20" straight rigid fork, 6061-T6 alloy
Bars: RADIO "ZUMA 20" bar, 6061-T6 alloy, 31.8mm bar bore, 1"rise
Grips: RADIO "ZUMA" grips, 110mm, flangeless
Stem: RADIO "ZUMA 45" frontload stem, alloy, 45mm reach
Headset: FSA A-headset, loose ball
Lever: PROMAX "BL-367" lever, alloy
Brakes: PROMAX "DSK-310" - mechanical disc front & rear brake
Cranks: RADIO "ZUMA" 3pc crank, forged alloy, 145mm length
Bb : RADIO bb set, BSA, square taper, sealed bearing
Pedals: RADIO "JUNIOR" pedals, nylon
Chain: KMC chain, Z1 narrow type, 1/2" x 3/32"
Sprocket: RADIO sprocket, steel, 32t, narrow wide
Driver: MICROSHIFT 12-28t, 7speed
Front Hub: RADIO disc hub, alloy shell, loose ball, QR crmo axle, 20h
Rear Hub: RADIO "ZUMA" disc cassette hub, alloy, sealed, QR, 20h
Front Rim: RADIO "J25SE" rim, alloy, double wall
Rear Rim: RADIO "J25SE" rim, alloy, double wall
Seat: RADIO "ZUMA 2024" railed seat
Seat Post: PROMAX "SP-2019" seat post, alloy, multi-adjust, 300mm
Seat Clamp: RADIO "SLIM" seat clamp, alloy
Tires: VEE TIRE "CROWN GEM" tires, 2.25" front & rear