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