KPMI Intake Valve Seat 1.757" x 1.410" x 0.430" - Harley Milwaukee-Eight Touring & Softail
About KPMI
Kibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.
This KPMI intake valve seat is engineered from Kibblewhite's proprietary material to resist microwelding and seat recession, ensuring long-lasting performance. It's a vital upgrade for Harley-Davidson engines operating in high-heat environments.
Why riders pick this
- Proprietary material resists microwelding and recession
- Excellent thermal characteristics for stability
- Compatible with diverse fuel blends
- Generous radius leading edge for easier installation
For riders demanding maximum reliability and performance from their Harley-Davidson, this KPMI intake valve seat delivers. Its advanced construction provides superior durability and thermal stability, crucial for maintaining optimal valve sealing and compression. Compatible with leaded, unleaded, methanol, and ethanol blends, it's designed to perform flawlessly with various fuel types and engine tunes.
Built for Reliable Intake Performance
- Kibblewhite proprietary material resists microwelding and valve face recession
- Provides excellent thermal characteristics for stable engine operation
- Compatible with leaded, unleaded, methanol, and ethanol fuel blends
- Generous radius leading edge designed for easier installation
Upgrade Your V-Twin's Valvetrain
Investing in high-quality valve seats is essential for any serious engine builder or performance enthusiast. This KPMI intake valve seat helps protect your cylinder heads from wear and ensures consistent airflow into the combustion chamber. It's a foundational component for a robust and powerful V-twin engine, ready for the demands of the open road or the drag strip.
Specifications
- Brand: KPMI
- Manufacturer Part #: 10-HC447
- Type: Intake valve seat
- Dimensions: 1.757" x 1.410" x 0.430"
- Weight: 0.25 lbs
Common questions
What fuels is this valve seat compatible with?
This KPMI valve seat is compatible with leaded and unleaded gasoline, methanol, and ethanol fuel blends. Kibblewhite's material handles all common motorcycle fuel types.
Does this seat resist recession over time?
Yes, the proprietary material resists microwelding and seat/valve face recession, extending service life compared to stock seats.
Is installation straightforward?
The generous radius on the leading edge helps ease insertion and seating during machine work, simplifying the installation process.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | KPMI |
| TYPE | Exhaust |
| SKU | 191-57104 |
| WEIGHT | 0.25 lb |
