MCS-978597 - Jims PowerglideT tappets will give you a superior hydraulic function when compared with OEM style equipment; a billet steel body with hand-honed hydraulic unitcavity and an oil fed axle. To get full power; you must have zero valve lash and eliminate colla

Fitment:
99-17(NU)Twin Cam; 17-21 M8; 00-21 XL; 08-12(NU)XR1200; 00-10(NU)Buell XB