Radio Zuma 20 2022

Radio Zuma 20 2022

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.

Currently In Stock

Black in size ’20″‘ (New):  $549.00 (was $999.00)

Available For Order

Radio offers these colours and sizes – call us on 02 4973 4446 and we’ll check whether they have stock!

Colour Black
Size 20″
RRP RRP $999 – Our Price $549


  • Top tube length – 17.3″
  • Chain stay length – 14.75″
  • Head tube angle – 69°
  • Seat tube angle – 73°
  • Bottom bracket height – 10mm drop
  • Standover height – 7.7″



Frame radio “zuma 20” frame, 6061-t6 alloy
Fork radio “zuma 20” straight rigid fork, 6061-t6 alloy
Headset fsa a-headset, loose ball
Bottom Bracket radio bb set, bsa, square taper, sealed bearing


Handlebar radio “zuma 20” bar, 6061-t6 alloy, 31.8mm bar bore, 1″rise
Stem radio “zuma 45” frontload stem, alloy, 45mm reach
Brake Levers promax “bl-367” lever, alloy
Grips radio “zuma” grips, 110mm, flangeless


Crankset radio “zuma” 3pc crank, forged alloy, 145mm length
Sprockets radio sprocket, steel, 32t, narrow wide
Chain kmc chain, z1 narrow type, 1/2″ x 3/32″
Pedals radio “junior” pedals, nylon


Brakes promax “dsk-310” – mechanical disc front & rear brake


Tyres vee tire “crown gem” tires, 2.25″ front & rear
Front Hub radio disc hub, alloy shell, loose ball, qr crmo axle, 20h
Front Rim radio “j25se” rim, alloy, double wall
Rear Hub radio “zuma” disc cassette hub, alloy, sealed, qr, 20h
Rear Rim radio “j25se” rim, alloy, double wall


Saddle radio “zuma 2024” railed seat
Seatpost promax “sp-2019” seat post, alloy, multi-adjust, 300mm
Seatpost Clamp radio “slim” seat clamp, alloy


Driver microshift 12-28t, 7speed
Weight 9.85kg

This information may contain errors and is subject to change without notice.

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65 Dora Street, Morisset NSW 2264 Ph: 02 4973 4446 Fax: 02 4973 4136