KIBBLEWHITE - 20-20430 - OEM Replacement Valve Spring Kit - '48-'65 Harley-Davidson Electra Glide, Hydra Glide, Duo-Glide
20-20430 is Kibblewhite's OEM replacement valve spring kit for '48-'65 Harley-Davidson, engineered to reproduce stock spring pressures and work with stock cam profiles rather than requiring other valvetrain changes. Retainers, keepers, and bases are FEA-modeled for mechanical strength, and the springs are wound from Super Clean chrome silicon wire that's been heat treated and shot peened. Manufactured to OEM spec with modern materials and techniques. Made in the USA.
Features
- Designed to give stock pressures and work with stock cam profiles
- Retainers, keepers, and bases are modeled using FEA (Finite Element Analysis) to maximize mechanical strength
- Springs are wound from Super Clean chrome silicon valve spring wire that has been heat treated and shot peened
- Manufactured to original O.E.M. specifications using premium modern materials, design protocols and manufacturing techniques
- Made in the USA
Specs
- Application: Intake
- Material: Chromium Silicon Alloy
- Application: Exhaust
- Product Name: Spring Kit
- Spring Lift: 0.415"
- Spring Open Pressure: 272 lb
- Spring Seat Pressure: 129 lb
- Model: OEM Replacement
- Riding Style: Street
- Collar Material: H.T. Steel
- Type: Valve
- Units: Kit
Frequently Asked Questions - KIBBLEWHITE - 20-20430 - OEM Replacement Valve Spring Kit - '48-'65 Harley-Davidson Electra Glide, Hydra Glide, Duo-Glide
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
