KPMI SHIM(S), SPRING, 0.915″ OD X 0.640″ ID X 0.015″ H 100PK

Setting the correct installed valve spring height and pressure is critical , the proper operation of the valvetrain. KPMI® offers a large selection of valve spring shims to allow the builder to compensate , changes that may have occurred due to machining or custom parts usage.