KPMI Valve Seat - Exhaust 1.457"x 1.102"x 0.354" — Harley-Davidson Road King Special, Tri Glide Ultra Classic, Electra Glide Ultra Limited (2017-2024)

KPMI exhaust valve seat with Kibblewhite proprietary material designed to resist microwelding and seat recession in high-heat environments. Compatible with leaded, unleaded, methanol, and ethanol fuel blends for street and alternative-fuel applications.

Features

• Kibblewhite proprietary seat material
• Resists microwelding and valve face recession
• Excellent thermal characteristics
• Generous radius leading edge for easier installation
• Compatible with methanol and ethanol blends

Specifications

• Brand: KPMI
• Manufacturer Part #: 10-HC370S
• Outside Diameter: 1.457 in
• Inside Diameter: 1.102 in
• Height: 0.354 in
• Weight: 0.25 lbs

Frequently Asked Questions

What fuel types is this valve seat compatible with?

Leaded, unleaded, methanol, and ethanol fuel blends. Safe for both traditional and alternative fuels.

Does this seat resist wear from high-heat riding?

Yes. The proprietary material resists microwelding and recession, which extends seat and valve face life.

Does the radius on the leading edge help installation?

Yes — the generous radius eases insertion and seating of the valve seat during engine work.

What are the exact dimensions?

Outside diameter 1.457 in, inside diameter 1.102 in, height 0.354 in.