231198 Shims 012 10 Pack

These hardened steel rocker arm shims are designed to precisely manage rocker arm end play in V-twin engines. Maintaining a specific clearance between 0.003" and 0.015" is essential for quiet operation and the longevity of valvetrain components. These specific shims measure 0.012" (0.30mm) in thickness, providing a reliable solution when standard tolerances are exceeded due to variations in rocker covers or arms. By using these hardened spacers, builders can eliminate excessive lateral movement that leads to top-end noise and uneven wear. Sold in packs of 10, they are a staple for any engine rebuild or performance valvetrain setup where precision spacing is required.