Any decked cylinder M7 to M8 big bore kit. We have an update kit available that allows the use of the cast M8 pistons. The kit consists of 2 Cat 800 pistons, spacer plate, 2 base gaskets, and we need your head for recut. The Polaris 85mm pistons are domed and the Cat 800 pistons are flat tops so there are modifications necessary.
PM me if you have interest or questions.
PM me if you have interest or questions.