KPMI White Diamond Intake Valve - 1.571 STD - Harley Milwaukee-Eight
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 intake valve is engineered for Harley-Davidson Milwaukee-Eight (M8) engines, offering a direct OEM replacement. Precision-machined to exacting standards, this valve ensures optimal performance without requiring cylinder head modifications.
Why riders pick this
- Direct OEM replacement for Milwaukee-Eight engines
- Standard 1.571 inch valve seat diameter
- Precision-machined for accurate fit
- No cylinder head modification required for installation
When it's time for a top-end refresh or performance build, choosing the right components is crucial. This KPMI White Diamond intake valve is designed to drop right into your stock M8 cylinder heads, making installation straightforward while maintaining factory flow characteristics.
Engineered for Reliability
- Designed for direct replacement in Milwaukee-Eight engines
- Standard 1.571 inch valve seat diameter fits stock M8 heads
- Precision-machined to OEM specifications for consistent fit and performance
- Contributes to reliable engine operation and sustained power output
Seamless Integration for M8 Performance
This valve is a go-to choice for riders and builders looking for a high-quality replacement that preserves the integrity of their M8 cylinder heads. It's an ideal component for routine maintenance or as part of a mild performance build where stock head dimensions are retained. Always verify with your engine builder for specific application needs.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-21012H
- Valve Seat Diameter: 1.571 in
- Length: 3.5 in
- Weight: 0.2 lbs
Common questions
Will this valve fit my M8 engine without modifying the cylinder head?
Yes, this KPMI White Diamond intake valve features a 1.571 inch standard seat diameter, designed to drop into stock Milwaukee-Eight heads without modification.
Is this an OEM Harley-Davidson part?
No, this is an aftermarket valve manufactured by KPMI to OEM specifications, providing a direct replacement for your Milwaukee-Eight engine.
Do I need new valve seats installed when replacing with this valve?
Not necessarily, but it's always recommended to have a qualified machine shop inspect your existing valve seats for wear and verify they are within specification before installing new valves.
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 | 191-17040 |
| WEIGHT | 0.2 lb |
