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Best Gear Calculator App

Calculate your ratio, FDR, pill insert geometry, corner weights, and more!

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RC Setup App icon

Free to start · iOS & Android

Setup App & Race Log

Your Mugen Seiki MRX7 is in the RC Setup App

Save every setup change you make to your Mugen Seiki MRX7, 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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