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Gear Ratio Calculator

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

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RC Setup App icon

Free to start · iOS & Android

Setup App & Race Log

Your Traxxas Rustler 4X4/VXL is in the RC Setup App

Save every setup change you make to your Traxxas Rustler 4X4/VXL, 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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