KIBBLEWHITE - 20-4170R - Exhaust Valve - Evolution

Q: Where can I find installation instructions for this product?

General installation notes are provided on the product page where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat for questions about difficulty, required tools, or whether professional installation is recommended.

Description

Kibblewhite presents the 20-4170R exhaust valve for Evolution engines. This one-piece stainless-steel valve is stellite-tipped and undergoes a special nitrided process, resulting in enhanced wear properties and reduced friction. With a corrosion-resistant design, it outperforms hard chromium and electrolysis nickel-plating. The valve features a lightweight construction and profiles that optimize flow characteristics. It is compatible with both leaded and unleaded fuels, and can be used in cast iron- and bronze-type guides with close tolerances for superior oil control and heat dissipation. Made in the U.S.A., this valve is a top choice for exhaust applications. The Black Diamond model measures 1.630" in head diameter, 0.3096" in stem diameter, and has a tulip angle of 40?. With a length of 4.525", this valve is designed for street riding. Each unit is made with precision and quality in mind.

Features

One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction

This process provides resistance to corrosion; wears superior to hard chromium and electrolysis nickel-plating

Lightweight with profiles that provide excellent flow characteristics

Compatible with leaded and unleaded fuels and can be run in cast iron- and bronze-type guides at close tolerances for maximum oil control and heat dissipation

Made in the U.S.A.

Specs

Product Name: Valve

Application: Exhaust

Model: Black Diamond

Material: Stainless Steel

Head Diameter: 1.630"

Stem Diameter: 0.3096"

Tulip Angle: 40?

Length: 4.525"

Units: Each

Riding Style: Street

30 Day Manufacturer's Warranty

Frequently Asked Questions - KIBBLEWHITE - 20-4170R - Exhaust Valve - Evolution

General info

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.