Free trackside tool

Chain length

Find your chain length from your sprockets and shaft spacing.

Your setup

Chain type

Distance unit

How to measure

With the engine off, measure from the center of the engine shaft to the center of the rear axle. Do not measure the gap between sprocket teeth.

Measure between shaft centers A small front sprocket and larger rear sprocket, with a dimension line between their shaft centers. Not to scale. Front Rear Center to center

Measuring guide, not to scale.

Estimated length

Enter your setup to calculate.

Your last five setups are saved on this device.