A grey Radio 26 Inch Zuma Sus Bike, featuring thick tires, a suspension fork, disc brakes, and a black saddle. This lightweight kid-sized MTB is displayed on a white background.
A lightweight, kid-sized MTB, the Radio 26 Inch Zuma Sus Bike, with front suspension, disc brakes, and knobby tires is on display against a white background.
A black mountain bike with red accents, featuring thick knobby tires, a sturdy frame, and a front suspension fork. The brand name appears on the frame. This Radio 26 Inch Zuma Sus Bike is designed with children's aftermarket components for young riders seeking adventure.
A black mountain bike with red accents, featuring thick tires, a front suspension fork, and a sturdy frame designed for off-road cycling. This Radio 26 Inch Zuma Sus Bike is perfect for adventurous riders.
A red children's mountain bike with front suspension, disc brakes, and wide tires. The Radio 26 Inch Zuma Sus Bike features the name "RadioBike Co." on the frame in yellow text.
A red Radio 26 Inch Zuma Sus Bike with a black fork, handlebars, and tires. This lightweight kid-sized MTB features disc brakes and thick tread tires suitable for off-road cycling. Perfect for young adventurers, it boasts children's aftermarket components designed for durability and performance.

Highlights

  • Kid sized mountain bike, not a toy
  • Lightweight 6061-T6 alloy frame and fork
  • RST air fork, 80mm travel
  • Tektro hydraulic discs, front and rear

Description

Buying a bike for your child can be daunting, so Radio built the Zuma range around one simple idea: a kid sized mountain bike. The geometry is researched around smaller riders, and the range runs from 14 inch for the first timer up to this 26 inch machine for the aspiring rookie.

The frame and fork are alloy to keep the weight down, the rims are double wall, and the parts come from Promax, KMC, FSA, Vee Rubber and Satori so the fit suits a smaller rider. An RST air fork with 80mm travel and Tektro hydraulic discs front and rear mean it looks, feels and rides like a full size MTB.

Features
  • Kid sized mountain bike, not a toy. Radio researched the geometry around smaller riders, so the Zuma looks, feels and rides like a full size adult MTB.
  • Lightweight 6061-T6 alloy frame and fork. The Zuma alloy frame keeps the weight low, so a young rider can lift and handle the bike on their own.
  • RST air fork, 80mm travel. The First-air fork soaks up rough ground on weekend off road rides with the parents.
  • Tektro hydraulic discs, front and rear. HD-M275 hydraulic disc brakes run from alloy Promax BL-42 levers, part of the child specific parts kit.
  • Cockpit sized for smaller riders. A 45mm frontload stem, a 1" rise alloy bar with 31.8mm bore and 130mm flangeless grips keep the reach short.

Specifications
  • Size: 26" wheels
  • Frame: Radio 'Zuma 24' frame, 6061-T6 alloy
  • Fork: RST 'First'-air 24, 80mm travel
  • Headset: FSA a-headset, loose ball
  • Stem: Radio 'Zuma 45' frontload stem, alloy, 45mm reach
  • Bars: Radio 'Zuma 24' bar, 6061-T6 alloy, 31.8mm bar bore, 1" rise
  • Grips: Radio 'Zuma' grips, 130mm, flangeless
  • Brakes: Tektro 'HD-M275' hydraulic disc, front and rear
  • Brake lever: Promax 'BL-42' lever, alloy
  • Rims: Double wall

Assembly information

Your bike ships mostly assembled in the box. Finishing it takes most people 10 to 20 minutes with basic tools, and the video above walks through every step.

  • Fit the handlebars and line them up with the front wheel
  • Fit the front wheel, pedals and seat post
  • Check the brakes and tyre pressure before the first ride

Tools: Allen key set and a 15mm, 17mm or 19mm spanner for the pedals and axle nuts (bikes can vary between these three sizes). A socket is needed if installing pegs.

Rather have it done? Ask us about extra assembly before you order, or any local bike shop can finish the build for a small fee.

Radio 26 Inch Zuma Sus Bike

Brand: Radio SKU:

From

$1,348.99 AUD

 $1,399.00 AUD

Or 4 payments of $337.24 AUD with

Recommended Rider Height: 160 cm and taller

Colour - Silver

Top Tube Length - 20.3

26 inch BMX sizing

A 26 inch is the largest BMX wheel, for riders about 160cm and up, on a 22 to 23 inch top tube. It is a ride feel rather than a size step: more roll and stability, still BMX geometry.

Rider heightWheel sizeTop tube
60 to 91cm12"12 to 12.5"
81 to 106cm14"14 to 14.5"
96 to 122cm16"16 to 16.5"
122 to 147cm18"18 to 18.5"
147 to 157cm20"19.75 to 20.25"
157 to 168cm20"20 to 20.5"
168 to 175cm20"20.25 to 20.75"
175 to 183cm20"20.5 to 21"
183 to 190cm and up20"20.75 to 21.5"
160cm and up22"21 to 22.25"
160cm and up24"21.75 to 22"
160cm and up26"22 to 23"

Sizes overlap on purpose, so personal preference comes into it. A big wheel rides longer than its top tube number suggests, so do not compare it straight against a 20 inch.

How to measure

Stand against a wall in the shoes you ride in, heels flat, and mark the top of your head. Measure from the floor to the mark.

  • Choose a big wheel for the ride feel, not because you are tall. Plenty of tall riders stay on 20 inch.
  • Coming off a 20 inch? Expect it to feel longer and more stable, and slower to spin.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.

Read the full buying guide

26 inch BMX sizing

A 26 inch is the largest BMX wheel, for riders about 160cm and up, on a 22 to 23 inch top tube. It is a ride feel rather than a size step: more roll and stability, still BMX geometry.

Rider heightWheel sizeTop tube
60 to 91cm12"12 to 12.5"
81 to 106cm14"14 to 14.5"
96 to 122cm16"16 to 16.5"
122 to 147cm18"18 to 18.5"
147 to 157cm20"19.75 to 20.25"
157 to 168cm20"20 to 20.5"
168 to 175cm20"20.25 to 20.75"
175 to 183cm20"20.5 to 21"
183 to 190cm and up20"20.75 to 21.5"
160cm and up22"21 to 22.25"
160cm and up24"21.75 to 22"
160cm and up26"22 to 23"

Sizes overlap on purpose, so personal preference comes into it. A big wheel rides longer than its top tube number suggests, so do not compare it straight against a 20 inch.

How to measure

Stand against a wall in the shoes you ride in, heels flat, and mark the top of your head. Measure from the floor to the mark.

  • Choose a big wheel for the ride feel, not because you are tall. Plenty of tall riders stay on 20 inch.
  • Coming off a 20 inch? Expect it to feel longer and more stable, and slower to spin.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.

Read the full buying guide

Radio 26 Inch Zuma Sus Bike - Silver / 20.3

Instead of $1,399.00

$1,348.99 AUD

Price match request

  • Arrives mostly assembled. Most people finish it in 10 to 20 minutes.
  • Pay in 4 with PayPal on orders under $2,000: 4 interest-free payments of $337.24, one every two weeks, with no late fees. How it works

Bike shipping from $49.99All rates

Free in-store pickup - Brisbane

Availability

20.3
Silver
Black
Orange

● In stock at LUXBMX ● With supplier ● Preorder ○ Sold out

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