Manley Performance 11675-8 MAN Severe Duty Valves shop-mixing-cups Designed for Stock Tires

Designed for Stock Tires

tank sediment

75” wheel lug pattern

1996-1997 Harley Davidson XL1200C Sportster 1200 Custom

2013-2015 Honda NCH50 Metropolitan

Manley Performance 11675-8 MAN Severe Duty Valves shop-mixing-cups Designed for Stock TiresManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just