KPMI White Diamond Standard Exhaust Valve - Milwaukee-Eight 1.264 in - Harley M8
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.
The KPMI White Diamond exhaust valve is a direct replacement for Harley Milwaukee-Eight (M8) engines, precision-engineered to standard 1.264 inch specifications. This valve is built for enhanced performance and reliability, ensuring your M8 runs strong. It's a critical component for maintaining optimal engine function.
Why riders pick this
- Direct replacement for Milwaukee-Eight engines
- Standard 1.264 inch exhaust valve size
- White Diamond construction resists heat and wear
- Engineered for M8 performance and reliability
When it's time to refresh your Milwaukee-Eight engine, trust KPMI's White Diamond exhaust valve. This standard-sized 1.264 inch valve is a direct replacement, designed specifically to meet the demands of M8 performance. The White Diamond construction isn't just a name; it signifies a commitment to durability and heat resistance, crucial for the exhaust side of your V-twin's combustion cycle. Whether you're doing a routine refresh or addressing wear, this valve delivers the quality and fitment you expect.
Engineered for M8 Durability
- Direct replacement for standard 1.264 inch M8 exhaust valves
- White Diamond construction enhances heat and wear resistance
- Designed for optimal Milwaukee-Eight engine performance
- Ensures reliable and long-lasting valve train operation
Maintain Your M8's Performance
Installing the right components is key to keeping your Milwaukee-Eight engine running at its peak. This KPMI White Diamond exhaust valve is a straightforward upgrade for any M8 owner looking for a high-quality, direct-fit replacement. It's an essential part of any top-end service, ensuring your engine breathes correctly and maintains its power and efficiency. Pair it with other quality KPMI valvetrain components for a comprehensive upgrade.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-21016H
- Bore Size: 1.264 in
- Length: 3.5 in
- Weight: 0.2 lbs
Common questions
Will this exhaust valve fit my Twin Cam engine?
No, this KPMI White Diamond valve is specifically engineered for Milwaukee-Eight (M8) engines. Twin Cam owners will need a different part number.
What is the benefit of White Diamond construction?
White Diamond construction is designed to resist heat and wear in the exhaust valve seat, which extends the valve's life, especially under the high-temperature demands of a V-twin engine.
Is this a direct bolt-in replacement for my M8?
Yes, this 1.264 inch standard-size valve is a direct replacement for stock Milwaukee-Eight engines, requiring no modifications or adapters for installation.
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 | Engine |
| SKU | 191-17046 |
| WEIGHT | 0.2 lb |
