KPMI .600 Lift Valve Spring Kit - Harley Twin Cam
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 Twin Cam engine's potential with the KPMI .600 Lift Valve Spring Kit. This kit is engineered to provide robust valvetrain control for high-lift camshaft applications, preventing valve float and ensuring consistent performance. It's an essential upgrade for any rider pushing their V-twin's limits.
Why riders pick this
- Engineered for .600 lift Twin Cam camshafts
- Premium Kobe Super-Clean Chrome Silicon wire
- Heat-treated and stress-relieved for durability
- Shot-peened for superior fatigue resistance
- Optimized for cam harmonics and operating RPM
When you install a high-performance camshaft with .600 lift in your Twin Cam, the demands on your valve springs increase dramatically. The KPMI .600 Lift Valve Spring Kit is designed to meet these challenges, offering superior stability and control. Crafted from premium Kobe Super-Clean Chrome Silicon wire, these springs are built for durability and engineered to maintain precise valve timing even under extreme operating conditions, helping you unlock more power from your engine.
Engineered for High-Performance V-Twins
- Constructed from premium Kobe Super-Clean Chrome Silicon wire
- Heat-treated and stress-relieved for exceptional durability
- Shot-peened finish for enhanced fatigue resistance
- Precisely designed to match cam harmonics for smooth operation
A Foundation for Power
This KPMI valve spring kit is a critical component for any Twin Cam engine running a .600 lift cam. It provides the necessary spring pressure and coil bind clearance to support aggressive cam profiles, ensuring your valvetrain operates reliably at higher RPMs. For optimal results, pair these springs with a performance camshaft, upgraded pushrods, and a professional dyno tune to truly transform your Harley-Davidson's power delivery.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-20122
- Length: 4.85 in
- Width: 8.65 in
- Height: 2.3 in
- Weight: 1.31 lbs
Common questions
What lift camshaft are these springs rated for?
These springs are engineered for .600 lift Twin Cam camshafts. It is essential to verify your specific cam lift before ordering to ensure proper compatibility and performance.
Do I need new springs when upgrading my camshaft?
Yes, upgrading to a higher-lift cam almost always requires matching valve springs. This prevents coil bind, maintains proper valve control, and ensures engine longevity across the RPM range.
Is this a complete kit for all valves?
This kit includes the complete valve spring set needed for your Twin Cam engine. Always confirm the number of springs required for your specific application and cam setup.
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 | 191-27007T |
| WEIGHT | 1.31 lb |
