The Radio Griffin 24 Inch Dirt Jumper Bike features a teal frame, black Kenda tires, front suspension fork, single gear, and flat pedals, displayed on a white background.

The Radio Griffin 24 Inch Dirt Jumper Bike, with a 24" aluminium frame, front suspension, disc brakes, flat pedals, and Kenda tires, is photographed on a white background.

The Radio Griffin 24 Inch Dirt Jumper Bike features a metallic frame, front suspension fork, flat handlebars, single gear, and Kenda tires, shown against a white background.

Close-up of the crankset, pedal, chainring, and chain on the Radio Griffin 24 Inch Dirt Jumper Bike against a white background.

A close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s front wheel with a Kenda tire, Manitou suspension fork, and a 24” aluminum frame, set against a white background.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s front wheel hub and spokes on a black fork, showcasing detailed components and assembly on its 24” aluminum frame.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike showing its 24” aluminum frame, front suspension fork, detailed components, Kenda tire, and metallic paint finish.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike drivetrain, highlighting the chain, black crank arm, chainring, and part of the rear tire on its aluminum frame.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike in metallic brown, highlighting the rear wheel, chain, crankset, and frame with "RADIOBIKECO." branding.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s rear wheel, featuring a disc brake, RADIO-labeled hub, spokes, and part of its aluminum frame—perfect for pumptrack or dirt jump riding.

Close-up view of the Radio Griffin 24 Inch Dirt Jumper Bike seat attached to its metallic frame, with part of the rear tire and seat post visible.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s rear wheel, featuring an aluminum frame, disc brake system with a black caliper, silver rotor, and part of the frame labeled "RADIOBIKECO.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s handlebars, brake lever, front fork, and part of the saddle, highlighting its 24” aluminium frame and sleek black components.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s handlebar, stem, and head tube, highlighting its 24” aluminum frame and durable metal parts against a white background.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike's rear wheel, chain, crank arm, and flat pedal, with a section of the green frame in view.

Close-up of a black saddle mounted on the Radio Griffin 24 Inch Dirt Jumper Bike’s metallic green frame, with part of a knobby tire and visible "KENDA" branding.

Close-up of the Radio Griffin 24 Inch Dirt Jumper’s rear wheel, showing its disc brake, black "R40D" hub, chain, and part of the turquoise frame marked "RADIOBIKECO.

The Radio Griffin 24 Inch Dirt Jumper Bike, featuring a green frame, thick black tires, disc brakes, and a black saddle, is positioned at an angle on a white background.

Close-up view of the handlebar, front brake lever, frame, and saddle of the Radio Griffin 24 Inch Dirt Jumper Bike against a white background.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike's front suspension fork and Kenda tire, highlighting the tread pattern and a section of the bike frame.

Close-up view of the Radio Griffin 24 Inch Dirt Jumper Bike’s crankset, chainring, and chain, showcasing its metal frame and tire.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike's rear disc brake system, highlighting the caliper, rotor, wheel spokes, and part of the frame.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike frame in green, highlighting the rear wheel, pedal, chain, and branding—perfect for pumptrack enthusiasts.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike's right handlebar grip, brake lever, and part of its metallic green frame.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s front wheel, featuring a Kenda tire, Manitou suspension fork, disc brake, and part of its green frame.

Close-up of the Radio Griffin 24 Inch Dirt Jumper Bike’s front suspension fork, handlebar, tire, frame, and brake cable against a white background.

Highlights

Dirt jump and pumptrack hybrid
Manitou Junit Circus Comp fork
6061-T6 aluminium frame
Front and rear disc brakes

Description

The Griffin 24 is designed as a pumptrack and dirt jumper hybrid, and it is in a league of its own. The frame is 6061-T6 aluminium with a tapered head tube and a forged yoke, and up front there is a Manitou Junit Circus Comp fork with 90mm of travel.

The rest of the build is set up to be ridden hard from the first session down at the local: Salt+ Ultra 3-piece BMX cranks, front and rear disc brakes, double wall Arise DB32 rims and Kenda Small Block 8 2.1" tyres, finished with a Radio Century combo seat.

Features

Dirt jump and pumptrack hybrid. A 24" bike designed to handle jumps and carry speed around a pumptrack, so one bike covers both.
Manitou Junit Circus Comp fork. 90mm of travel up front takes the edge off rough lips and hard landings.
6061-T6 aluminium frame. A tapered head tube stiffens the front end and a forged yoke tidies up the rear, keeping the weight down.
Front and rear disc brakes. Tektro Aries mechanical up front and an HD-M275 hydraulic at the rear, both on 160mm rotors for consistent braking.
BMX cranks, dirt jump wheels. Salt+ Ultra 3-piece chromoly 140mm cranks, sealed Radio PRO-DJ disc hubs and double wall Arise DB32 rims on Kenda Small Block 8 tyres.

Specifications

Size: 24"
Frame: Radio Griffin 24, 6061-T6 aluminium, tapered head tube, forged yoke
Fork: Manitou Junit Circus Comp, 90mm travel
Headset: FSA No.42/ACB-A integrated A-headset, 1-1/8" to 1.5"
Stem: Arise Zoom frontload, aluminium, 40mm reach
Bars: Arise Griffin 24, 6061-T6 aluminium, 31.8mm
Grips: Radio Frequency, flangeless, 130mm
Brakes: Tektro Aries mechanical disc, 160mm rotor front; Tektro HD-M275 hydraulic disc, 160mm rotor rear
Brake lever: Tektro RS-360A front, Tektro HD-M275 rear
Cranks: Salt+ Ultra 3-piece, TSS chromoly, 140mm, 8 spline
Bottom bracket: Radio BSA19, sealed bearing
Sprocket: Salt Gateway, aluminium, 25T
Chain: Salt AM, WZ1 type
Pedals: Radio Slim, nylon/fibreglass
Front hub: Radio PRO-DJ disc, aluminium, sealed, 3/8" male axle, 32H
Rear hub: Radio PRO-DJ disc, aluminium, sealed, 3/8" chromoly axle, 32H
Rear cog: 10T cassette driver, sealed bearing
Rims: Arise DB32, double wall, front and rear
Tyres: Kenda Small Block 8, 2.1"
Seat: Radio Century combo
Gearing: 25-10

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 Griffin 24 Inch Dirt Jumper Bike

Name: Radio Griffin 24 Inch Dirt Jumper Bike
Brand: Radio
SKU: RABK214-26-BNZ
Price: 1999.99 AUD
Availability: InStock

Brand: Radio SKU: Click to copy the SKU and show the pick location

$1,999.99 AUD

Or 4 payments of $499.99 AUD with

Colour - Stone Bronze

Top Tube Length - 22

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 height	Wheel size	Top tube
60 to 91cm	12"	12 to 12.5"
81 to 106cm	14"	14 to 14.5"
96 to 122cm	16"	16 to 16.5"
122 to 147cm	18"	18 to 18.5"
147 to 157cm	20"	19.75 to 20.25"
157 to 168cm	20"	20 to 20.5"
168 to 175cm	20"	20.25 to 20.75"
175 to 183cm	20"	20.5 to 21"
183 to 190cm and up	20"	20.75 to 21.5"
160cm and up	22"	21 to 22.25"
160cm and up	24"	21.75 to 22"
160cm and up	26"	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