Calculators And Tools

Gear Ratio Calculator

Ring-and-pinion selection made easy!

Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork.

Solve For
Gear Ratio
(ex. 4.56)
(ex. 5000)
Tire Diameter (in.)
(ex. 28)
(ex. 45)
*** Calculated using a 1:1 final
drive ratio (No Overdrive)

Free Catalog

Our famous Summit Racing catalog and specialty catalogs too!

Sign UpArrow

Sign Up for E-mail

Get up to speed with special offers and event info!

Sign UpArrow

As Seen on TV

Featured products from your favorite shows!

View NowArrow

New Parts

Your headquarters for the hottest new products!

View NowArrow
Email this page Close