The Colony Premise 20 Inch Bike, a blue chromoly BMX with black handlebars, seat, and double-wall rim wheels, is shown against a white background.

Close-up of the handlebars and front section of the Colony Premise 20 Inch Bike, featuring black grips, a brake lever, and part of the blue chromoly frame against a white background.

Close-up of the front wheel and fork of a Colony Premise 20 Inch Bike with black tire, double-wall rims, black spokes, and blue frame on a white background.

Close-up of the Colony Premise 20 Inch Bike’s front wheel showing double-wall rims, fork, hub, axle nut, and spokes against a white background.

Close-up of the Colony Premise 20 Inch Bike's blue chromoly frame, showcasing the pedal, crank arm, partial chain, rear tire, and double-wall rims against a white background.

Close-up of the Colony Premise 20 Inch Bike’s rear wheel, showcasing its sealed cassette hub, metal spokes, chain, and part of the robust blue chromoly frame.

Close-up of a black bicycle seat with colored stitching on the Colony Premise 20 Inch Bike’s blue chromoly BMX frame, showing rear tire and brake cables.

Description

The Colony Premise runs a full chromoly frame, fork and bar setup built to take the hits, whether you are smashing your local park, hunting ledges or dipping into trails. The 20.8" top tube sits in the sweet spot for most riders: stable and responsive without feeling like a boat or a scooter.

Up front are 25mm offset forks with tapered legs and a CNC machined steer tube, while the rear end is slammed to 13" for spins and snappy manuals, with a 75.2° head angle keeping the front end lively. The details are tight: Fantastic Plastic pedals, sealed bearings all round, double wall rims, a 9T sealed cassette hub, 170mm tubular chromoly cranks, an Endeavour 25T alloy sprocket and Griplock 2.35" tyres front and back.

Features

Full chromoly frame, fork and bars. Built to take the hits, whether you are riding your local park, hunting ledges or dipping into the trails.
Universal 20.8" top tube. A stable, responsive middle ground that suits most riders without feeling like a boat or a scooter.
13" slammed rear, 75.2° head angle. Short chainstays make spins and manuals snappy while the steep front end keeps the steering lively.
25mm offset forks, CNC steerer. Tapered legs and a one piece CNC machined steer tube give you a front end that is clean, strong and holds lines.
Sealed bearings and Griplock tyres. A 9T sealed cassette hub with plastic guards, double wall rims and 2.35" Colony Griplock tyres front and back.

Specifications

Size: 20" wheels, 20.8" top tube
Frame: Colony Premise full CrMo, 20.8" top tube, 13.0" rear slammed, 75.2° head angle, 71° seat angle, 11.5" mid BB height, integrated headset
Top tube: 20.8"
Chainstay: 13.0" slammed
Head tube angle: 75.2°
Seat tube angle: 71°
Standover: 8.75" (centre of BB shell to centre of top tube)
Bottom bracket height: 11.5", mid
Fork: Colony Premise full CrMo, tapered legs with 1 piece CNC steer tube, 25mm offset
Headset: Integrated
Stem: Top load
Bars: Full CrMo, 9" rise
Grips: Colony Much Room
Cranks: 170mm tubular chromoly, sealed bearings
Sprocket: Colony Endeavour 25T alloy
Pedals: Colony Fantastic Plastic
Rear hub: 9T sealed cassette with plastic guards
Rims: Double wall
Tyres: Colony Griplock 2.35" front and rear
Seat: Fat seat and post combo

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.

Colony Premise 20 Inch Bike

Name: Colony Premise 20 Inch Bike
Brand: Colony
SKU: D05-025G1
Price: 1099.99 AUD
Availability: InStock

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

$1,099.99 AUD

Or 4 payments of $274.99 AUD with

Colour - Blue

Top Tube Length - 20.8

A 20 inch bike is the standard adult BMX and suits riders from about 147cm up. At this wheel size the top tube is what changes the fit, so pick that by height.

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 you land in two bands, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park.

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.

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the same as the length of the tube you can see.

A 20 inch bike is the standard adult BMX and most riders end up there, so do not size a tall child down to a smaller wheel.
22, 24 and 26 inch bikes are adult bikes with a bigger wheel, not bigger frames for taller riders.
Size up for stability through trails and transitions. Size down if you want the bike quick and twitchy for spins and grinds.
Top tube is fixed, but stem length, fork offset and bar position all shift how roomy the bike feels once you are on it.

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

Read the full buying guide