KIBBLEWHITE - 20-23450 - Rocker Shim Conversion Dual Valve Spring Kit - '17-'25 Harley-Davidson Tri Glide Ultra Classic FLHTCUTG, Electra Glide Police FLHTPI
The KIBBLEWHITE Rocker Shim Conversion Dual Valve Spring Kit features designed for maximum performance, All spring kits should be used together, and Available in a complete set for one engine.
Features
- Designed for maximum performance
- Features interference-wound, double-chrome silicone springs; heat-treated steel base washers
- All spring kits should be used together
- Available in a complete set for one engine
- Made in the USA
- Modification necessary to maximize shim contact, KPMI recommends "tipping" (shortening the valve tip).
- There is anticipated to be a rough 0.100" increase in effective stem protrusion with the use of the shim.
- This system must be run with KPMI's newer style M8 valve guides, which are shortened for 0.675" valve lift.
Specs
- Riding Style: Street
- Style: Conversion
- Valve Seat Height: 1.600"
- Material: Chrome-Silicon
- Spring Lift: 0.675"
- Type: Valve Shim
- Units: Kit
- Spring Open Pressure: 317 lb
- Application: Exhaust
- Product Name: Spring Kit
- Spring Seat Pressure: 86 lb
- Application: Intake
- Collar Material: H.T. Steel
- Model: Dual Spring
Frequently Asked Questions - KIBBLEWHITE - 20-23450 - Rocker Shim Conversion Dual Valve Spring Kit - '17-'25 Harley-Davidson Tri Glide Ultra Classic FLHTCUTG, Electra Glide Police FLHTPI
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.
