KPMI Beehive Valve Spring Kit .550 Lift - 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.
Maximize your Milwaukee-Eight (M8) non-VVT engine's high-RPM potential with the KPMI Beehive Valve Spring Kit, rated for .550 inches of lift. This kit is precisely engineered to prevent valve float and spring bind, allowing you to run aggressive cam profiles with confidence. It's a vital upgrade for any 2017-2024 Harley-Davidson M8 owner looking to extract more power and reliability.
Why riders pick this
- Rated for .550 inch valve lift
- Beehive design reduces valvetrain inertia
- Prevents valve float for consistent power
- Enhances high-RPM stability for M8 non-VVT engines
When you're building a performance Milwaukee-Eight, the valvetrain is only as strong as its weakest link. Stock valve springs can quickly become a limitation when introducing higher-lift camshafts or pushing the engine to higher RPMs. The KPMI Beehive valve spring kit addresses this by providing superior spring pressure and stability. The unique beehive design offers a lighter retainer and less mass, reducing valvetrain inertia and allowing for quicker, more controlled valve action. This translates to consistent power delivery and a more responsive engine throughout the rev range, without the worry of valve float.
Optimized Valvetrain Control
- Beehive spring design reduces valvetrain mass
- Rated for .550 inch of valve lift for performance cams
- Prevents valve float and spring bind at high RPMs
- Specifically engineered for non-VVT Milwaukee-Eight engines
Building a High-Performance M8
This KPMI Beehive valve spring kit is an essential component for any Milwaukee-Eight non-VVT engine receiving a cam upgrade. It provides the necessary control and stability for more aggressive camshaft profiles, ensuring your valves open and close precisely at high engine speeds. For a complete performance package, consider pairing these springs with compatible KPMI valves and a high-performance camshaft tailored to your riding style.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-21215
- Lift Rating: .550 in.
- Length: 9 in
- Width: 7 in
- Height: 2 in
- Weight: 1.5 lbs
Common questions
Will this fit my 2017-2024 Harley with M8 and VVT?
No, this specific kit is designed for non-VVT Milwaukee-Eight engines only. VVT-equipped models require a different spring kit due to design differences.
What lift rating are these springs rated for?
These Beehive springs are precisely rated for .550 inches of valve lift, making them ideal for performance camshafts in that range and preventing float and bind at high RPM.
Do I need new pushrods or rocker arms with this kit?
While spring replacement alone typically doesn't necessitate new pushrods or rocker arms, it's always recommended to verify rocker arm compatibility with your specific cam profile when upgrading valvetrain components. Consult your engine builder.
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 | 191-27022S |
| WEIGHT | 1.5 lb |
