KPMI Valve Spring Kit 20-20483 for Harley-Davidson Flathead Knucklehead 1930-2048
$99.00
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KPMI Valve Spring Kit 20-20483 for Harley-Davidson Flathead Knucklehead 1930-2048
$99.00
All KPMI valve springs are developed in-house using advanced simulation software and decades of engineering expertise to optimize natural frequency, fatigue life, and stress management. Crafted from super-clean Chrome-Silicon wire traceable to Kobe, Japan, these springs undergo precision heat treatment, stress relief, and shot peening processes.
Manufactured by ISO-certified U.S. facilities, this high-performance valve spring package ensures exceptional reliability and endurance for vintage Flathead engines under demanding conditions.
Key Features
| Brand | KPMI |
| Manufacturer Part Number | 20-20483 |
| Type | Intake / Exhaust |
| Quantity | Pkg. of 4 |
| Material | Chrome-Silicon (Cr-Si) Steel |
| Compatible Make | Harley-Davidson |
| Compatible Model | Flathead (1930-1973) |
| Product Weight | 349 g |
Highlights
- Engineered using advanced proprietary design and simulation protocols
- Constructed from premium Super-Clean Chrome-Silicon spring wire
- Undergoes rigorous heat treating, stress relieving, and shot peening
- Manufactured in the USA by ISO-certified partners
Compatibility
Fits Harley-Davidson Flathead models from 1930 to 1973 for both intake and exhaust valve locations.
Frequently asked questions
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