Description & Size Guide
Jims PowerglideT tappets wll 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 collapsing of the hydraulic unit as is found in the OEM unit; also called ''the shock absorber syndrome''. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets come as close to a solid tappet as possible; but are still able to compensate for heat expansion. They will even work well with solid style camshafts. Fits as a improved oversized diameter replacement for OEM 18538-99C. Note: Standard is .8420" O.D.
99-17 (NU) Twin Cam; 17-25 M8; 00-22 (NU) XL Sportster; 08-12 (NU) XR1200; 00-10 (NU) Buell XB
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