Radio Dice 18 Inch Bike with green frame, black seat and handlebars, and Salt Tracer Tyres, shown on a white background.

Radio Dice 18 Bike (2021) / Candy Red / 18TT

Radio Dice 18 Bike (2021) / Matt Black / 18TT

Side view of the Radio Dice 18 Inch bike in blue, featuring a black seat, black handlebars, and Salt Tracer Tyres.

The Radio Dice 18 Inch Bike comes in a striking blue color, featuring black handlebars, Salt Tracer Tyres, and white text on the frame. It boasts a durable build with a compact design and is equipped with Radio Rookie Three Piece Cranks.

A red Radio Dice 18 Inch Bike with black handlebars, seat, and Salt Tracer Tyres, viewed from an angle, showcasing its frame and components.

Close-up of a blue Radio Dice 18 Inch Bike's drivetrain showcasing the chain, black chainring labeled "RADIOBIKECO," and part of the tire and frame. The bike is equipped with Radio Rookie Three Piece Cranks for added durability.

Close-up view of the Radio Dice 18 Inch Bike's front wheel, showcasing black spokes and hub. The tire, fitted with Salt Tracer Tyres, and part of the bike frame are also visible.

Close-up image of a bicycle pedal and crank arm attached to the frame, featuring Radio Dice 18 Inch Bike with black components and a portion of the rear tire visible.

Close-up of a black bicycle's drivetrain, showcasing the chain, sprocket, and Radio Dice 18 Inch Bike with "RADIOBIKECO" branding.

Close-up of a black bicycle handlebar with a textured rubber grip and brake lever on the Radio Dice 18 Inch Bike.

Close-up of a bicycle wheel showing the spokes, hub labeled "RADIO," and part of the fork. The tire branding "INNOVA" and other small details are visible, hinting at the high-quality components typically seen on models like the Radio Dice 18 Inch Bike.

Close-up of the black Radio Dice 18 Inch Bike, showcasing its handlebars, brake lever, seat, and rear wheel with Salt Tracer Tyres against a white background.

Close-up of the front wheel and fork of a black Radio Dice 18 Inch Bike, showing Salt Tracer Tyres, spokes, and part of the frame with "KGB" branding.

Close-up of the handlebars, stem, and front brake cable on the Radio Dice 18 Inch Bike in black, showing their connection to the frame.

Close-up of the drivetrain on a black Radio Dice 18 Inch Bike, showing the chain, crank arm, chainring, pedal, part of the rear wheel, and Radio Rookie Three Piece Cranks.

Close-up of a black BMX pedal, Radio Rookie Three Piece Cranks, chain, and Salt Tracer tyres on the rear wheel of the Radio Dice 18 Inch Bike against a white background.

Close-up of the black "RADIO" seat mounted on the seat post of the Radio Dice 18 Inch Bike, featuring part of the frame and Salt Tracer Tyres, set against a white background.

Close-up of the front of the Radio Dice 18 Inch Bike in black, showing handlebars, head tube with decals, Salt Tracer Tyres on the front wheel, and brake cable against a white background.

Close-up of a black handlebar with rubber grip and brake lever on the Radio Dice 18 Inch Bike, set against a white background. The frame shows part of the word "RAD.

The Radio Dice 18 Inch Bike, featuring a compact black frame, Salt Tracer Tyres, and upright handlebars, is displayed on a white background.

The Radio Dice 18 Inch Bike, in black, features Salt Tracer Tyres, a reinforced frame, and upright handlebars. The bike is positioned at an angle against a plain white background.

Close-up of the rear wheel, Radio Rookie Three Piece Cranks, and chain on a black Radio Dice 18 Inch Bike with Salt Tracer Tyres against a white background.

Highlights

Full 6061 alloy frame
3-piece tubular chromoly cranks
25/9 gearing with a cassette hub
Salt Tracer 2.2" tyres, 36-hole wheels

Description

You will become the king of craps with this 18" dice! These bikes are stacked full of the goods from Radio, FSA and Salt to create a riding experience like no other. Salt Tracer Tyres provide loads of traction with a 2.20" width, Radio Rookie Three Piece Cranks beefs up the midsection of the bike, Radio Am Sprocket in 25T provides the optimal gearing with the included 9T Cassette Hub and loads more! This bike is set to be an absolute hoot!

Features

Full 6061 alloy frame. The Dice 18 frame is full 6061 alloy, with a 1020 Hi-Ten Radio Rookie 18 fork with tapered legs, 9.86 kg all up.
3-piece tubular chromoly cranks. Radio Rookie 152mm 8-spline cranks beef up the midsection of the bike, spinning on a sealed 19mm BSA bottom bracket.
25/9 gearing with a cassette hub. A Radio AM 25T steel sprocket paired with the 9T cassette driver gives the optimal gearing, with a KMC S1 chain between them.
Salt Tracer 2.2" tyres, 36-hole wheels. Loads of traction from the 2.2" width, on Radio Rookie single wall rims laced 36-hole to Radio AM alloy hubs, semi-sealed at the rear.
Junior-sized cockpit, rear U-brake. 7.9" rise Radio Rookie 18 bars, a 40mm Radio Junior topload stem, 150mm flangeless Radio AM grips and a Radio AM alloy lever on the rear U-brake.

Specifications

Size: 18" wheels, 18" top tube
Frame: Radio Dice 18, full 6061 alloy
Chainstay: 12.2"
Head tube angle: 75°
Seat tube angle: 71.5°
Standover: 6.8"
Bottom bracket height: 10.75"
Fork: Radio Rookie 18, 1020 Hi-Ten, tapered legs
Headset: FSA A-headset, loose ball
Stem: Radio Junior top load, 40mm reach
Bars: Radio Rookie 18, 1020 Hi-Ten, 7.9" rise, 26.5" wide, 10° backsweep, 3° upsweep
Grips: Radio AM, flangeless, 150mm
Brakes: Radio AM alloy U-brake, rear
Brake lever: Radio AM, alloy
Cranks: Radio Rookie tubular 3-piece chromoly, 152mm, 8-spline
Bottom bracket: BSA (68), 19mm, sealed
Sprocket: Radio AM, steel, 25T
Chain: KMC S1
Pedals: Radio VP536, nylon fibreglass
Front hub: Radio AM, alloy, loose ball, 3/8" axle, 36H
Rear hub: Radio AM cassette, alloy, semi-sealed, 14mm axle, 36H
Rear cog: 9T cassette driver, loose ball
Rims: Radio Rookie, single wall, 36H, front and rear
Tyres: Salt Tracer 2.2", front and rear
Seat: Radio Century slim padded combo
Seat clamp: Radio slim alloy
Gearing: 25/9
Weight: 9.86 kg

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 Dice 18 Inch Bike

Name: Radio Dice 18 Inch Bike
Brand: Radio
SKU: RABK138-21-BLK
Price: 749.99 AUD
Availability: OutOfStock
Rating: 5.0 (1 reviews)

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

$749.99 AUD

Or 4 payments of $187.49 AUD with

Colour - Matt Black

Top Tube Length - 18

An 18 inch bike suits a rider of about 122 to 147cm, usually 7 to 11 years old, on an 18 to 18.5 inch top tube. It is the last step before a full size 20 inch.

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. If your rider is near 147cm and still growing, look at a 20 inch instead: it is the size they will keep riding.

How to measure

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

Between an 18 and a 20? Take the 20. It is the size they will keep riding, and an 18 gets outgrown quickly.
They should be able to stand over the top tube with both feet flat on the ground.

Not sure? Send us their height and we will tell you what we would put them on.

Read the full buying guide