•4g63 Valve Spring Shim for use with Kiggly Racing Beehive Valve Spring Kit (#1050).
•Available in 3 sizes:0.015", 0.030", 0.060". 16 pieces.
•Shim 0.015", +5lbs seat pressure, 3psi boost, now 0.515"max lift.
•Shim 0.030", +9lbs seat pressure, 5psi boost, now 0.515"max lift.
•Shim 0.060", +19lbs seat pressure,11psi boost, now 0.470"max lift.

•Parts normally shipped the next business day.

Race Only Valve Spring Shim

Shim Size

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