Academy Aspire 20 BMX Bike Trans Dark Red (2021)
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Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.

First Free Tune-up
Every bike come with a complimentary free tune-up and safety check.
The Academy Aspire is one of the original BMX bikes from Academy and it keeps getting better each year. This bike looks to give you value for money with sealed hubs throughout with a 9t driver as well as CrMo bars and cranks. It is built with a 20.4" top tube and should be suitable for riders between 150 and 175cm depending on your riding preferences. Academy stepped this bike up with alloy double wall rims and an alloy U brake for control. The Academy Aspire is kitted out with a range of spec usually reserved for more expensive bikes and is the real value bike in the Academy BMX range. If you're after your first BMX bike then you can't go wrong with the Academy Aspire.
Features
- Academy Aspire CrMo Downtube with 20.4” TT
- Chromoly fork
- Academy 8.75” rise bars
- Rear Alloy U brake
- Alloy Double wall rims
- Academy 3pce CrMo Tubular Crankset - 8 spline 170mm
SKU | ACXB21021G1 |
---|---|
Season | 2021 |
Size | 20inch |
Click & Collect | Yes |
Wheel Size | 20" |
Frame Material | Chromoly |
Fork Material | Chromoly |
Cassette Type | Single Speed |
Chainset Type | Single |
Brake Type | U-Brake |
Bottom Bracket | Sealed Mid 19mm |
Brakes | Alloy U-Brake |
Brake Levers | Alloy |
Cassette | Academy 25T |
Chain | KMC |
Crankset | Academy CrMo Tubular 8 spline 19mm spindle 170mm length |
Fork | Academy Aspire CrMo Steer Tube, tapered legs |
Frame | Academy Aspire CrMo Steer Tube |
Grips | Academy Pro |
Handlebar | Academy Full CrMo, 8.75" rise x 28.0" wide |
Hubs | Academy Alloy Cassette Full Sealed with 14mm axle 36 hole |
Pedals | Plastic |
Rims | Alloy Double Wall 36 hole |
Saddle | Academy Pro Combo |
Seatpost | Academy Pro Combo |
Spokes | Black |
Tyres | Family F2128 20 x 2.3" |
Kids Bike Sizing | 20 Inch |
Top Tube Length | 20.4 |
Top Tube Length | 20.x" |
20" Freestyle BMX Sizing Chart
Top Tube
Top Tube
Top Tube
Top Tube
This is only an 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.

Legend
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
Size |
20inch | Wheel Size | 20" | Frame Size | 20 | TT Top Tube (mm) | 20.4 | CS Chain Stay Length (in) | 13.25 | HTA Head Tube Angle (°) | 75.0 | STA Seat Tube Angle (°) | 71.0 | R Reach (mm) | - | WB Wheel Base (mm) | - |