i am new to four stroke, and would like to change my piston and rings on my yz 450 2012.
in 2 stroke, for yamaha they used A, B,C,D piston sizes
what happens for four stroke? do you keep putting the same piston size over and over?For oem pistons i have seen only one size for my bike.
if you do not know the piston size that was in, what do you recommend doing?
Thank you for answering