Wiseco, 107" to 124" big bore piston conversion kit

17-23 107" M8 models with 4.25" big bore cylinder kit

Used with 4.25" big bore cylinders and stock 107" (3.937") stroke. Flywheel re-balancing is not required. Note: See 577193 for 4.25" big bore cylinder set. Note: See 576556 for Wiseco 4.25" bore gasket set.