stock bore of 81-84 250r and 300r?

[200x newby]

what is the stock bore of an 81-84 250r cylinder and the stock bore of a 300r cylinder

[1upfront]

what is the stock bore of an 81-84 250r cylinder and the stock bore of a 300r cylinder

Stock 84 250r 70mm, stock 300r 76mm.

[money89tractors]

are you sure about that 300R bore being 76mm? The one im looking at has a good 1/4" of sleeve left and its at over 80mm

-Phil

[1upfront]

Yes I'm sure, you must be looking at a cr 450, 480, or cr500 cylinder.