A black mountain bike with a lightweight alloy frame, thick tires, front suspension fork, disc brakes, and "Radio" branding in teal from the Radio 24 Inch Zuma Bike.
A black children's MTB bike from the Radio 24 Inch Zuma Bike range featuring a lightweight alloy frame, a green "Ridgeback" logo on the frame, thick tires, front suspension fork, and disc brakes.
A turquoise children's MTB bike from the Radio 24 Inch Zuma Bike range, featuring a black saddle, black handlebars, and thick knobby tires, is displayed against a plain white background. Crafted with a lightweight alloy frame, it's perfect for young adventurers.
A teal-colored kid-sized MTB bike with thick black tires and a black seat, featuring a lightweight alloy frame by Radio 24 Inch Zuma Bike, presented on a white background.

Highlights

  • A kid sized MTB, not a shrunken one
  • Light 6061-T6 alloy frame
  • Rigid alloy fork
  • Disc brakes front and rear

Description

Buying a bike for your child can be daunting, so Radio built the Zuma range around the idea of a kid sized MTB. The geometry is researched for smaller riders, sitting between a bike a child can learn the basics on and a more capable MTB for off road weekend rides with the parents.

The range runs from 14" for a first time rider up to 26" for the aspiring rookie. This 24" model uses a 6061-T6 alloy frame and rigid alloy fork with Promax mechanical disc brakes, and takes children specific parts from Promax, KMC, FSA, Vee Rubber and Satori.

Features
  • A kid sized MTB, not a shrunken one. Radio researched the geometry around smaller riders, so the Zuma 24 fits properly rather than being a scaled down adult bike.
  • Light 6061-T6 alloy frame. Alloy keeps the weight down, so a growing rider can lift, pedal and steer the bike without fighting it on longer rides.
  • Rigid alloy fork. The straight Zuma 24 fork is 6061-T6 alloy as well, keeping the front end light and simple with nothing to service.
  • Disc brakes front and rear. Promax DSK-310 mechanical discs with an alloy BL-42 lever give confident stopping on off road tracks and weekend family rides.
  • Cockpit scaled to smaller hands. 130mm flangeless grips, a 1" rise 31.8mm alloy bar and a 45mm reach frontload stem put the controls within easy reach.

Specifications
  • Size: 24" wheels
  • Frame: Radio Zuma 24, 6061-T6 alloy
  • Fork: Radio Zuma 24 straight rigid, 6061-T6 alloy
  • Headset: FSA a-headset, loose ball
  • Stem: Radio Zuma 45 frontload, alloy, 45mm reach
  • Bars: Radio Zuma 24, 6061-T6 alloy, 31.8mm bar bore, 1" rise
  • Grips: Radio Zuma, 130mm, flangeless
  • Brakes: Promax DSK-310 mechanical disc, front and rear
  • Brake lever: Promax BL-42, 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 24 Inch Zuma Bike

Brand: Radio SKU:

$999.00 AUD

Or 4 payments of $249.75 AUD with

Recommended Rider Height: 160 cm and taller

Colour - Teal

Top Tube Length - 19.3

24 inch BMX sizing

A 24 inch cruiser is a BMX with a bigger wheel, for riders about 160cm and up, on a 21.75 to 22 inch top tube. It is a different ride feel rather than a bigger frame for taller riders.

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. Race cruisers are sized differently again: see the race guide.

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

24 inch BMX sizing

A 24 inch cruiser is a BMX with a bigger wheel, for riders about 160cm and up, on a 21.75 to 22 inch top tube. It is a different ride feel rather than a bigger frame for taller riders.

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. Race cruisers are sized differently again: see the race guide.

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 24 Inch Zuma Bike - Teal / 19.3

$999.00 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 $249.75, one every two weeks, with no late fees. How it works

Bike shipping from $49.99All rates

Free in-store pickup - Brisbane

Availability

19.3
Black
Teal

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

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