Track Gear Calculator

Gear Inches: -

Rollout (m): -

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Shop components for your selected ratio

We recommend the products below for the chainring and sprocket sizes selected above. Other suitable options may also be available across our range. Please confirm the required size and compatibility on each product page.

Efficiency-optimised alternative

The same or a very similar gear can sometimes be built with a larger chainring and sprocket, which may reduce drivetrain losses.

Same gear. Larger drivetrain.

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- Gear inches
- Rollout (m)

What could a modest 0.25% efficiency improvement mean?

Approx. 0.2 sec Over a 4km pursuit
Approx. 0.02 sec Over a 250m sprint

These are research-based illustrations, not predicted or guaranteed savings for this exact combination. Component quality, chain preparation, chainline, tension and concentricity all affect the result.

Shop recommended chainring Shop recommended sprocket Check the larger combination's chain length