Colony Emerge 20 BMX Bike Purple Storm (2021)

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Free Bike Build

Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.

First Free Service

First Free Tune-up
Every bike come with a complimentary free tune-up and safety check.

Please note, due to challenges in the product supply chain, bike specifications are subject to change without notice. Specifications listed below may not match exactly as shown in the photo.

The Colony Emerge 20 BMX Bike is the ideal entry to the world of BMX for the aspiring BMX rider who wants to start with a great bike. The Emerge has a full CrMo frame with 20.7" top tube, this gives you a lightweight yet durable platform for success. Add to that CrMo forks with 25mm offset, 8.75" rise CrMo bars and CrMo 3 piece tubular cranks for a ride that is ready to shred.

It has fully sealed front and rear hubs, single wall rims and Colony Grip Lock 20x2.35" tyres which have a good mix of speed and traction. The Colony Emerge 20 BMX Bike has a lot going for it, with CrMo parts across the board, sealed hubs and 3 piece crankset which are all a mark of the high quality build of this bike.


  • Frame: Colony Emerge Full CrMo 20.7”TT, 13.0” rear, 75.2º HA, 71º ST.MID BB, Integrated Headset. Extra Wide Tire Clearance.
  • Forks: Colony Emerge, Tapered legs with CrMo steer tube, 25mm offset.
  • Handlebars: Colony 8.75″ rise 29.5″ wide CrMo.
  • Crankset: Colony 3pce CrMo Tubular 8 spline, 170mm.
  • Tyres: Colony Grip Lock 20×2.35″.


More Information
SKU D05-021B
Season 2021
Size 20inch
Click & Collect Yes
Wheel Size 20"
Frame Material Chromoly
Fork Material Chromoly
Cassette Type Single Speed
Chainset Type Triple
Brake Type U-Brake
Bottom Bracket MID Sealed
Brakes Front: Caliper, Rear: Alloy U-Brake
Brake Levers Alloy
Cassette 9T Sealed
Chain 410
Crankset 3 pce Tubular CrMo 170mm
Fork CrMo 1-1/8"
Frame Colony Emerge, Full CrMo, 20.7” TT
Grips Colony Much Room
Handlebar CrMo 8.75" x 28"
Headset Integrated
Hubs Alloy Sealed Bearing
Pedals Colony Fantastic Plastic
Rims Alloy Double Walled
Saddle Colony CC Combo
Seatpost Alloy 25.4mm
Stem Colony Wide CrMo: 8.75" Rise; 29.5" Wide
Spokes Black Stainless Steel
Tyres Colony Grip Lock 20 x 20.35"
Weight 11.20kg
Kids Bike Sizing 20 Inch
Top Tube Length 20.4
Top Tube Length 20.x"

Colony 20" Wheel Sizing Chart

Rider's Height (cm)
18.9" Top Tube
19.5-20.4" Top Tube
20.5-20.8" Top Tube
20.8-21" Top Tube

BMX Bike Geometry Diagram


ST Seat Tube

TT Top Tube

CS Chain Stay Length

HTA Head Tube Angle

STA Seat Tube Angle

BD Bottom bracket Drop

HT Head Tube

FL Fork Length

R Reach

S Stack

WB Wheel Base


Wheel Size 20"
Frame Size 20
TT Top Tube (mm) 20.4
CS Chain Stay Length (in) 13.25
HTA Head Tube Angle (°) 75.2
STA Seat Tube Angle (°) 71.0
R Reach (mm) -
WB Wheel Base (mm) -


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