12 Speed Bike Cassettes | Bike Freewheels

Compare (0/5)

Find Your Size

Step 1: Measure your height

Take off your shoes
Stand with your back straight against a wall
Balance a book on your head to mark your height on the wall
Measure your height by the distance from the floor to the mark

Your height:

Find Your Size

Step 2: Adjust your inseam

Based on your height, we’ve calculated a starting point.
You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
Inseam typically falls with 5cm of the average.

Your inseam:

Find Your Size

Your results

For the we suggest the following size.

More comfort More speed

Height: --

Inseam: --

Adjusted Height: --

Find Your Size

We have saved your measurements.

Recommended sizes will now be highlighted on the page.

Related Categories

Road Bike Cassettes & Freewheels

Road bike cassettes and freewheels for every gear setup and riding style. Upgrade your drivetrain with the right sprocket range for climbing, racing, or long rides.

Explore More

Mountain Bike Cassettes & Freewheels

Mountain bike cassettes and freewheels for every trail and drivetrain setup. Upgrade your gearing with a wide range of sprockets built for MTB riding.

Explore More

11 Speed Cassettes & Freewheels

Upgrade your 11 speed drivetrain with 99 Bikes range of 11 speed cassettes and freewheels built for smooth, precise shifting.

Explore More

10 Speed Cassettes & Freewheels

Shop 10 speed cassettes and freewheels for road, MTB, and commuter bikes. Upgrade your drivetrain with the right gear range for smoother, more reliable shifting.

Explore More

9 Speed Cassettes & Freewheels

Upgrade your drivetrain with 9 speed cassettes and freewheels built for reliable shifting across road, MTB and commuter setups. Shop a wide range online now.

Explore More

8 Speed Cassettes & Freewheels

8 speed cassettes and freewheels for every riding style. Upgrade your drivetrain with reliable options suited to road, MTB, and commuter bikes.

Explore More

6 & 7 Speed Cassettes & Freewheels

6 & 7 speed cassettes and freewheels for everyday riders and commuters. Reliable gearing upgrades that keep your bike shifting smoothly, available online and in store.

Explore More

Single Speed Cassettes & Freewheels

Single speed cassettes and freewheels for every rider and setup. Shop a wide range online and find the right fit for your bike today, with fast delivery available.

Explore More