BOLT ON READY!
For higher HP/displacement engines, larger valves and cylinder openings are available.
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Specifications;
Cylinder opening: 90.5mm
Intake valve size: 35.5mm
Exhaust valve size: 32mm
Valve guides: Silicon bronze
Valve springs, keepers & retainers: Stock type - Identical to original German Volkswagen
Spark plug hole: Stock (14mm x 1/2")
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