I have CRF250R and race MX...I typically gear bikes down to get more use out of 4th and 5th. Rule of thumb 3-4 teeth change on back is approx. to 1 tooth on front sprocket. Changing 2 teeth on rear sprocket is pretty minor in my opinion and would not warrant a change on front.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.