Your Gearing Setup
Typical: 12–18T
Typical: 36–52T
From your bike's spec sheet or a verified test, at the teeth counts above
Final Drive Ratio
2.80
Top Speed
—
km/h
Top Speed
—
mph
Scaled from the top speed you enter above, in proportion to the final drive ratio — see "How the Top Speed Estimate Is Calculated" below for why this works without needing your gearbox's internal ratios. Accuracy depends on how reliable that starting number is.
Gearing Comparison — Front & Rear ±1–2 Tooth Changes