JavaScript seems to be disabled in your browser.
You must have JavaScript enabled in your browser to utilize the functionality of this website. Click here for instructions on enabling javascript in your browser.
Replacing the 1st driven gear only with the Robinson industries 1st gear will lower the ratio from 2.61:1 to 2.69:1, allowing you to run a tall enough final drive so it does not hit the rev limiter before the end of the quarter mile. A must for those who want to get the lowest E.T. and best M.P.H. out of their Hayabusa.