KPMI White Diamond 1.614" Oversized Intake Valve - Harley Milwaukee-Eight Non-VVT
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.
Boost the airflow and durability of your Harley Milwaukee-Eight (M8) non-VVT engine with the KPMI White Diamond 1.614" Oversized Intake Valve. This precision-engineered valve is a direct replacement, designed to enhance performance and withstand the rigors of spirited riding. Its oversized diameter promotes increased intake flow, optimizing your engine's breathing.
Why riders pick this
- 1.614 inch oversized for improved intake air volume
- White Diamond coating for superior heat and wear resistance
- Direct replacement for non-VVT M8 intake valves
- Enhances engine durability and high-RPM stability
For riders pushing their Milwaukee-Eight non-VVT engines, every detail in the valvetrain contributes to overall power and reliability. The KPMI White Diamond 1.614" oversized intake valve is crafted for those who demand more. The White Diamond coating is specifically formulated to resist the intense heat cycling and wear that performance engines generate, ensuring your valve train components last longer and perform consistently at high RPMs. This valve is a direct fit, making it a straightforward upgrade for M8 owners looking for improved intake efficiency.
Enhanced Airflow and Durability
- 1.614 inch oversized diameter for improved intake flow
- White Diamond coating resists heat and wear effectively
- Direct fit for Milwaukee-Eight non-VVT intake ports
- Engineered for reliable performance under demanding conditions
Optimizing Your M8 Valvetrain
This oversized intake valve is an excellent choice for Milwaukee-Eight owners looking to uncork additional power, especially when paired with complementary camshafts and a proper dyno tune. It's built to handle increased demands, providing a solid foundation for further engine modifications. Ensure your M8 is running at its peak by upgrading to components designed for performance and longevity.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-21060H
- Valve Type: Intake
- Size: 1.614 inch O/S
- Length: 4.4 in
- Weight: 0.5 lbs
Common questions
Will this fit my 2017+ M8 with variable valve timing (VVT)?
No, this valve is specifically designed for non-VVT Milwaukee-Eight models only. VVT-equipped M8s require a different part number and specific valve design.
Is this an oversized valve compared to stock?
Yes, the 1.614 inch diameter is oversized, intended to improve flow over the factory intake valve for enhanced engine performance.
What does the White Diamond coating do?
The White Diamond coating is a proprietary surface treatment that resists heat cycling and wear, significantly extending valve life and improving durability, especially under high-RPM operation.
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 | 191-17048 |
| WEIGHT | 0.5 lb |
