the ultimate bmx racing gear calculator
Meet Gearbag, your new favorite BMX app.
Calculating your gear-inches and rollout just got a whole lot easier. Now, you can spend less time doing algebra in the hotel room, and more time in the winner's circle.
Oh, and it's free. You're welcome.
Calculate equivalent gearing for different tires
Tire options for most major makes and models
Suport for decimal gearing