Rotrex calculators

Choosing the right pulley size requires a bit of math – if you’re not into that, here’s some handy calculators. We also have a oil system volume calculator to help you fill and prime your Rotrex supercharger system correctly.

Instructional videos are available on our how-to page

Pulley related calculators

Minimum Pulley Calculator

Traction fluid system calculator

  • Please enter the total length of oil hose in your system

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