KIBBLEWHITE - 20-21650 - Racing Valve Spring Kit - '84-'04 Harley-Davidson and Buell FXRS-Conv Low Rider Sport Convertible, Electra Glide Ultra Classic FLHTCU
Kibblewhite's 20-21650 racing valve spring kit for '84-'04 Harley-Davidson and Buell engines isn't a generic stiffer spring, it's engineered around the specific cam profile, harmonics, natural frequency, valvetrain mass, required seat pressure, wire stress, and fatigue life of the application, then progressively wound from Kobe super-clean chromium silicon wire that's heat treated and shot peened. Sold as a complete set for one engine. Made in the USA.
Features
- Designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm
- Progressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot peened
- Complete set for one engine
- Made in the USA
Specs
- Model: Lightweight Racing
- Product Name: Spring Kit
- Material: Chromium Silicon Alloy
- Riding Style: Street
- Collar Material: H.T. Steel
- Spring Seat Pressure: 185 Ib
- Style: Racing
- Units: Kit
- Spring Lift: 0,650"
- Spring Lift: 0.650"
- Application: Intake
- Application: Exhaust
- Spring Open Pressure: 440 lb
- Type: Valve
Frequently Asked Questions - KIBBLEWHITE - 20-21650 - Racing Valve Spring Kit - '84-'04 Harley-Davidson and Buell FXRS-Conv Low Rider Sport Convertible, Electra Glide Ultra Classic FLHTCU
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.
