KPMI Black Diamond Exhaust Valve - Sportster 1200cc Harley-Davidson
About KPMI
Kibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.
Enhance the durability and performance of your Harley Sportster 1200cc engine with a KPMI Black Diamond exhaust valve. Machined from a single stainless steel forging, this valve is built to withstand extreme conditions.
Why riders pick this
- Stainless steel one-piece forging
- Black Diamond German impregnation process
- Reduces friction and improves wear resistance
- Lightweight design with optimized flow
- Superior corrosion resistance
The KPMI Black Diamond exhaust valve for Harley Sportster 1200cc engines is engineered for the demands of high-performance V-twins. Each valve is crafted from a robust, one-piece stainless steel forging and undergoes KPMI's proprietary German Black Diamond impregnation process. This advanced treatment penetrates .002 inches into the steel, significantly reducing friction, improving wear resistance, and providing superior corrosion protection compared to standard chrome or nickel plating. It's a critical upgrade for any serious Sportster rider.
Unmatched Durability and Performance
- Stainless steel one-piece forging for maximum strength
- Black Diamond German impregnation process for deep surface hardening
- Reduces friction and significantly improves wear resistance
- Lightweight design with an optimized flow profile
- Superior corrosion resistance for extended component life
Ready for the Ride
Whether you're tearing up the track or carving canyons, this KPMI Black Diamond exhaust valve ensures your Sportster 1200's engine can handle the heat. Its advanced material and precise manufacturing contribute to consistent performance and longevity. Consider a full valvetrain upgrade with KPMI Black Diamond intake valves to unlock the full potential of your Sportster engine.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2014
- Length: 5 in
- Width: 3.6 in
- Height: 1.5 in
- Weight: 0.19 lbs
Common questions
What is the Black Diamond process?
The Black Diamond process is a proprietary German impregnation treatment that penetrates .002 inches into stainless steel, significantly improving wear resistance, reducing friction, and providing superior corrosion resistance compared to chrome or nickel plating.
Is this a complete valve set or a single valve?
This is a single exhaust valve. You will need to order the quantity required for your engine rebuild, typically one per cylinder.
Will this fit my Harley-Davidson Sportster 1200?
This valve is specifically engineered for Harley-Davidson Sportster 1200cc engines. For exact model year compatibility, please confirm fitment using our Shop by Bike tool before ordering.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | KPMI |
| TYPE | Engine |
| SKU | 191-17008 |
| WEIGHT | 0.19 lb |
