Wiseco, 107" to 124" Big Bore Piston Conversion Kit

Used with 577193 4.25" big bore cylinders and stock 107" (3.937") stroke. Flywheel re-balancing is not required. Includes pistons; piston rings; wristpins and wristpin keepers / retaining rings. Note: See 577193 for required 4.25" big bore cylinder set. Note: See 576556 for required Wiseco 4.25" bore gasket set. Note: See 701087 for replacement piston ring set only

Fitment: 17-24 107" M8 models with 4.25" big bore cylinder kit

Suitable where the listed fitment matches.