KPMI Black Diamond Oversized Intake Valve - Harley Twin Cam 88-103
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.
Elevate the performance and longevity of your Harley Twin Cam 88-103 engine with the KPMI Black Diamond Oversized Intake Valve. This valve is treated with a proprietary German impregnation process, delivering exceptional wear resistance and reduced friction far beyond standard plating. Crafted from a strong, one-piece stainless steel forging, it's built for superior flow and enduring reliability.
Why riders pick this
- Deep surface hardening via Black Diamond impregnation
- Outperforms chrome and nickel plating for durability
- Lightweight, strong one-piece stainless steel construction
- Optimized flow profile for enhanced Twin Cam performance
For Twin Cam riders who demand the best from their engine, the KPMI Black Diamond intake valve offers a significant upgrade. The unique German Black Diamond® impregnation process penetrates deep into the valve surface, creating a protective layer that is incredibly resistant to wear and corrosion. This advanced treatment ensures your valvetrain can handle the stresses of higher RPMs and increased power output, maintaining optimal performance for the long haul. It's an investment in your engine's future, designed to keep you on the road and out front.
Unmatched Durability and Performance
- Proprietary German Black Diamond® impregnation process for deep surface hardening
- Superior wear and corrosion resistance compared to plated valves
- Lightweight, strong one-piece stainless steel forging
- Optimized flow profile specifically for Twin Cam engines
Building a Better Twin Cam
Installing KPMI Black Diamond intake valves is a crucial step for any Twin Cam 88-103 owner looking to enhance their engine's internal integrity. These valves are designed to work seamlessly within a performance build, complementing upgraded camshafts and cylinder head work. Ensure your engine breathes freely and reliably, whether you're cruising the open road or pushing the limits on the track.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-20940
- Valve Type: Intake
- Engine Compatibility: Twin Cam 88-103
- Length: 4.4 in
- Width: 2 in
- Height: 0.5 in
- Weight: 0.5 lbs
Common questions
Will this fit my 2005-2017 Harley Twin Cam engine?
Yes, this intake valve is specifically designed for Twin Cam 88-103 cubic inch engines found in 2005-2017 Harley-Davidson models.
What makes Black Diamond® valves different from stock or plated valves?
The German impregnation process penetrates .002" deep, improving wear resistance and reducing friction far beyond what traditional chrome or nickel plating can offer, leading to a much longer lifespan.
Is this a one-piece or multi-piece valve design?
This KPMI Black Diamond intake valve features a robust one-piece stainless steel forging, ensuring maximum strength and durability under high-stress conditions.
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 | 191-17038 |
| WEIGHT | 0.5 lb |
