Supertech Factory Shim Replacement | 1989-2002 Nissan Skyline GT-R (RB26-SHIM-2.40)

1989-2002 Nissan Skyline GT-R Factory Shim Replacement by SupertechBy placing a valve shim in any out-of-tolerance valve spring location, all cylinders are able to receive and exhaust the same amount of material. Many engine builders consider the valve shi

$5.06 $6.32

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