Academy Origin 18 Kids BMX Bike Gloss Black/Polished (2021)

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The Academy Origin is a 18" Kids BMX which is one of the most affordable bikes going around. Designed with an 18" top tube and 18" wheels, the Origin suits kids between the ages of 7 and 13 with its simple and easy to control design sure to be a hit. Like most entry level bikes it is made with tough Hi-Ten steel frame, forks and bars, but still brings the quality with a fully sealed cassette hub with 25/9 gearing. It rolls on single wall rims with an alloy U brake for control so that kids can learn to ride with confidence. The Academy Origin is a BMX that does the basics well and doesn't load up on unnecessary spec for entry level riders, ensuring that you get excellent value from this bike.


  • Frame: Academy Origin 18” 18.0” TT Hi-Ten
  • Forks: Academy BMX Origin 18” Hi-Ten tapered legs
  • Handlebars: Academy 7.5” rise 25” wide Hi-Ten.
  • Crankset: Academy 1pce, Hi-Ten 152mm.
More Information
Season 2021
Size 18inch
Click & Collect Yes
Wheel Size 18"
Frame Material Steel
Fork Material Steel
Cassette Type Single Speed
Chainset Type Single
Brake Type U-Brake
Bottom Bracket USA loose ball
Brakes Rear Alloy U brake, front caliper
Brake Levers Alloy
Cassette Academy 25T
Chain KMC
Crankset One piece Hi-Ten steel 152mm
Fork Academy Origin 18", Hi-Ten, tapered legs
Frame Academy Origin 18", Hi-Ten
Grips Academy
Handlebar Academy, Hi-Ten, 7.5" rise x 25.0" wide
Hubs Alloy sealed cassette 9T 10mm axle 36 hole
Pedals Plastic
Rims 18" Alloy Single wall 36 hole
Saddle Academy Railed with steel post
Seatpost Academy Railed with steel post
Spokes Black
Tyres Family F2128 18" x 2.1"
Kids Bike Sizing 18 Inch
Top Tube Length 18
Top Tube Length 18.x"

Kid's Bike Sizing Chart

Rider's Height (cm)
Boys & Girls frame sizes
12" Wheel
16" Wheel
20" Wheel
24" Wheel
26" Wheel

This is an accurate estimate, and every new bike comes with a free professional bike fit when you click & collect in store, plus all bikes have a 30 day Perfect Ride Guarantee.

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 18"
Frame Size 18
TT Top Tube (in) 18.0
CS Chain Stay Length (in) 12.25
HTA Head Tube Angle (°) 74.0
STA Seat Tube Angle (°) 71.0
R Reach (mm) -
WB Wheel Base (mm) -


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