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Gear Ratio Calculator

Dial in your pinion and spur in seconds — free, with rollout and FDR.

Calculate

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Free to start · iOS & Android

Setup App & Race Log

Your Mugen Seiki MTX7R is in the RC Setup App

Save every setup change you make to your Mugen Seiki MTX7R, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.

  • Setup Tracking
  • AI Mechanic answers
  • Find & Share Setups
  • Race Log
  • Gear Ratio Calculator
  • Free to use
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