Alfaholics production 1mm oversize inlet valve. They feature swirl machining on the head of the valve to improve the gas flow into the cylinder.
This is the largest valve that will fit in a standard valve seat and by having 9mm stems also fit in standard valve guides and with standard cotters etc. This part is a direct replacement for standard items with no other modifications being required.
1600/1750 – 42.5mm
2000 – 45mm
Price: £24.50 each