KPMI Kibblewhite .600 Lift Valve Spring Kit - Harley Twin Cam 88-103
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.
Elevate your Twin Cam 88-103's performance with the KPMI Kibblewhite .600 Lift Valve Spring Kit. These springs are crucial for maintaining valvetrain stability when running aggressive, high-lift camshafts. Designed to handle increased demands, they ensure reliable operation and optimal power delivery across the RPM range.
Why riders pick this
- Engineered for .600 lift Twin Cam 88-103 applications
- Premium Kobe Super-Clean Chrome Silicon construction
- Heat-treated and stress-relieved for maximum durability
- Shot peened for superior fatigue resistance
- Designed for optimal cam harmonics and operating RPM
When you upgrade your Twin Cam 88-103 with a .600 lift camshaft, the valvetrain experiences significantly higher stresses and demands. This KPMI Kibblewhite valve spring kit is specifically engineered to meet those challenges, providing the necessary spring pressure and control to prevent valve float and ensure precise valve timing. Built from premium Kobe Super-Clean Chrome Silicon wire, these springs are a robust foundation for any performance Twin Cam build.
Built for High-Lift Camshafts
- Constructed from premium Kobe Super-Clean Chrome Silicon wire
- Heat-treated and stress-relieved for enhanced durability and lifespan
- Shot peened to boost fatigue resistance under demanding conditions
- Optimized to match cam harmonics for consistent valve control
Unlocking Your Twin Cam's Potential
This valve spring kit is an indispensable upgrade for riders looking to maximize their Twin Cam 88-103 engine's potential with a .600 lift cam. By ensuring proper valve control, you can safely rev higher and extract more usable power from your engine. Combine this kit with a performance camshaft, high-flow cylinder heads, and a precise dyno tune to achieve a truly potent V-twin setup.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-20364
- Length: 4.9 in
- Width: 7.45 in
- Height: 2.3 in
- Weight: 1.46 lbs
Common questions
What lift camshaft is this kit designed for?
This kit is engineered specifically for .600 lift Twin Cam 88-103 camshafts. It is crucial to confirm your cam's lift specification before purchasing to ensure proper fitment and performance.
Are these compatible with stock Twin Cam heads?
Yes, these springs are designed to mount in stock Twin Cam 88-103 head positions. However, always ensure proper valve clearance and seat contact after installation, especially with high-lift cams.
Will I need to re-shim my valvetrain with these springs?
Depending on your specific cylinder heads, valve lengths, and cam specifications, shimming may be necessary to achieve the correct installed height and spring pressure. Professional installation is recommended.
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 | 191-27004S |
| WEIGHT | 1.46 lb |
