fits  17-23 M8 (intake/exhaust)

Can be used for intake or exhaust. Dimensions 35mm/1.378″ OD x 26.01mm/1.024″ ID x 11.02mm/.434″ height. Replacement U.S.A. made hard chrome valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seats are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, hard chrome valve seat. 35mm OD

fits  17-23 M8 (intake/exhaust)

Dimensions: 44.62mm/1.757″ OD x 35.81mm/1.410″ x 10.92mm/.430″ height. Replacement U.S.A. made hard chrome valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seats are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, hard chrome valve seat. 44.62mm OD

fits  66-84 Big Twin (NU)

Oversized exhaust seat. 1.750″ (44.50) with +.010″ oversized dimension. Repl. 1810-79 and 18055-66B.

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Home > Parts > Engine > Top End > Valves > Seats > S&S, valve seat. Exhaust. 1.750″ +.010″

fits  07-17 X-Wedge engines; 84-17 V&T style engines with 89cc chamber

Fits S&S cylinder heads with 89cc chamber.

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Home > Parts > Engine > Top End > Valves > Seats > S&S, valve seat. exhaust. 1.605″ OD

fits  Universal

Dimensions: 47.00mm/1.850″ OD; 36.50mm/1.437″ ID; 11.00mm/0.434″ height. U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. Suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 47mm OD

fits  Universal

Dimensions: 49.00mm/1.929″ OD; 38.50mm/1.516″ ID; 11.00mm/0.434″ height. U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. Suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 49mm OD

fits  36-47 Knucklehead (in/ex) (NU)

Dimensions: 49.40mm/1.945″ OD; 38.10mm/1.500″ ID; 11.43mm/0.450″ height. Replacement U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seat are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 49.40mm OD

fits  48-65 Panhead (In/Ex) (NU)

Dimensions: 50.98mm /2.007″ OD; 39.67mm/1.562″ ID; 11.43mm/0.450″ height. Replacement U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seat are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 50.98mm OD

fits  57-83 XL Sportster (intake) (NU)

Dimensions: 54.15mm/2.132″ OD; 42.93mm/1.690″ ID; 11.43mm/0.450″ height. Replacement U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seats are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 54.15mm OD

fits  84-17 Big Twin (Excl. 110″ & 2017 M8); 1987 XL SportsterH 1100; 88-22 XL Sportster1200; 08-12 XR1200; 2006 Buell. (Exhaust for all models) (NU

Dimensions: 44.62mm/1.757″ OD; 35.00mm/1.375″ ID; 11.43mm/0.450″ height. Replacement U.S.A. made cast iron valve seats from Kibblewhite Precision Machining for leaded and unleaded fuels including methanol and ethanol blends. All valve seats are in identical material and suitable for both intake as exhaust. Offers excellent thermal characteristics and resists micro-welding. With leading edge to ease installation. Note: Abbreviations used OD = Outside Diameter, ID = Inside Diameter.

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Home > Parts > Engine > Top End > Valves > Seats > KPMI, cast iron valve seat. 44.62mm OD