Exhaust valve seat XL57-83 BT84-17 PoMet

KPMI's proprietary valve seat material is compatible with leaded and unleaded fuels including methanol and ethanol fuel blends. This material offers excellent thermal characteristics and resists micro-welding that leads to seat and valve face recession. Machinable with standard tooling. Leading edge has generous radius to ease installation.
Dimensions are listed as outer diameter x inner diameter x height