Know Your Speed Before You Race
The TRM Gear Ratio Calculator helps speedway racers calculate theoretical top speed based on rev limit, gear ratio, final drive, and tyre dimensions. Save multiple calculations and compare setups instantly.
Coming Soon to Google Play
Easy Input
Enter rev limit, gear ratio, final drive, and tyre size
Instant Results
Get calculated top speed in KM/H or MPH
Save Calculations
Store and compare multiple gear setups
Reference Data
Quick access to common gear ratios