041 Twin Port Cylinder Head - 1600cc (Bare Head, No Valves)

For use on all 1600cc Twin Port aircooled engines this `041` cylinder head has larger valves installed over the standard `040` head giving you more performance out of the box.

Each head is sold bare without valves or valve springs.

Valves required for these heads are 40x8mm inlet valves and 35.5x8mm exhaust valves.

Requires the use of smaller M12 long reach spark plugs like the NGK DPR8EA-9

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