KPMI Beehive Valve Spring Kit .640 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.
Support aggressive, higher-lift camshafts in your Harley Milwaukee-Eight (M8) non-VVT engine with the KPMI Beehive Valve Spring Kit, rated for an impressive 0.640 inch lift. This kit provides the robust valvetrain stability needed for maximum valve event performance. It's a direct upgrade from stock springs, essential for any M8 owner pushing the limits of their engine's powerband.
Why riders pick this
- 0.640 inch valve lift capacity for aggressive cams
- Beehive spring design for superior stability
- Prevents valve float and ensures precise valve control
- Direct upgrade for Harley Milwaukee-Eight non-VVT
When you're chasing serious horsepower and torque from your Milwaukee-Eight non-VVT, a high-lift camshaft is often part of the equation. However, stock valve springs simply aren't designed to handle the increased lift and aggressive ramps of performance cams, leading to potential valve float and a loss of power. The KPMI Beehive valve spring kit solves this with its superior design and increased spring pressure, precisely controlling valve movement even with cams rated up to 0.640 inch lift. This means more consistent power delivery, improved engine longevity, and the confidence to rev your M8 harder.
Engineered for High-Lift Cams
- Rated for 0.640 inch valve lift capacity
- Beehive spring design for reduced valvetrain mass and stability
- Prevents valve float with aggressive camshaft profiles
- Complete kit specific to non-VVT Milwaukee-Eight engines
Unleashing Your M8's Potential
This KPMI Beehive valve spring kit is a mandatory upgrade for any Milwaukee-Eight non-VVT engine running a high-lift camshaft. It ensures proper valve control and prevents component damage, allowing your engine to achieve its full potential. For optimal performance, pair these springs with a compatible KPMI valve and a camshaft that matches your desired power characteristics and riding style. This kit is a critical piece of the puzzle for a truly high-performance M8 build.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-24400
- Lift Specification: 0.640 inch
- Weight: 1.5 lbs
Common questions
What lift cam does this support?
This valve spring kit is specifically rated for camshafts with up to 0.640 inch valve lift. It's crucial to match these springs with a compatible high-lift camshaft for optimal performance.
Will this fit my 2025+ Milwaukee-Eight?
This kit is designed for 2017-2024 non-VVT Milwaukee-Eight models. For 2025 and newer models, spring specifications may differ, so it's best to verify fitment with KPMI or your engine builder.
Do I need to install a new cam with these springs?
While these springs can be installed with a stock cam, they are designed to support higher-lift camshafts. To realize the full potential and benefits of this kit, it's recommended to upgrade to a compatible higher-lift camshaft.
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 | 191-27027S |
| WEIGHT | 1.5 lb |
