Motorcycle Engine Valves Set Fit For Suzuki AN400 Burgman Skywave 400cc Replacement Parts Fit For AN400 Burgman 400 SKYWAVE 400 complete engine set; four valves match DOHC cylinder head mounting layout direct cylinder head drop-in installation design; fits seat without casing or extra shims machined head stem maintain accurate & timing; improves low-mid torque output heat-resistant body with polished stem surface; stable sealing under long highway operation produced to OEM length, head diameter stem size; tight fit with seats to avoid leakage power loss