what type of piston rings should i use

[jakem28655]

I have a YZ125 that has been bored 40 over. I ride mainly for recreation and not often. what size piston rings do i need and what kind should i use?

 

[CRazy250]

use whatever wiseco offers, if its bored over 40 then get 40 over rings

 

[griffbones]

If it is a Wiseco use their rings, if it is an oversize OEM piston use Yamaha's rings. I guess what I am saying is use the same brand of rings as the brand of piston, because Wiseco rings normally don't work on a OEM piston and visa versa.

 

[john stu]

wisoco's are great but be sure to let your bike warm up at low rps for a few minutes before hitting powerband........................you don't want to cold seize

 

[76GMC1500]

The important thing is to run the ring gap specified by the piston manufacturer. Different pistons run the rings in different pistons. A piston with rings closer to the crown runs looser gaps.