KPMI Black Diamond Intake Valve - Twin Cam 88-103 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.
Unleash the full potential of your Harley Twin Cam 88-103 cubic-inch engine with a KPMI Black Diamond intake valve. Engineered from one-piece stainless steel forgings, this valve is designed for superior durability and performance.
Why riders pick this
- Black Diamond German impregnation process
- Superior wear and corrosion resistance
- One-piece forged stainless steel
- Optimized flow profile for efficiency
- Lightweight design
The KPMI Black Diamond intake valve is a premium upgrade for Harley Twin Cam 88-103 engines. Each valve is meticulously crafted from a single piece of stainless steel and features a proprietary German impregnation process. This Black Diamond treatment hardens the valve surface to a depth of .002 inches, providing exceptional wear and corrosion resistance that far surpasses standard chrome or nickel plating. Riders will appreciate the reduced friction, leading to extended service life and more consistent engine operation.
Engineered for Twin Cam Performance
- Black Diamond German impregnation process to .002″ depth
- Superior wear and corrosion resistance over chrome or nickel plating
- One-piece forged stainless steel construction for robust strength
- Optimized flow profile for enhanced combustion efficiency
- Lightweight design contributes to improved valvetrain dynamics
A Foundation for Power
Whether you're building a high-performance Twin Cam or simply refreshing a hard-working engine, this KPMI Black Diamond intake valve provides the reliability and efficiency you need. Its advanced construction helps your engine breathe better and maintain peak performance under demanding conditions. Pair these intake valves with KPMI Black Diamond exhaust valves for a comprehensive valvetrain upgrade that truly elevates your Twin Cam's capabilities.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-20322
- Length: 3.5 in
- Width: 4.65 in
- Height: 1.75 in
- Weight: 0.2 lbs
Common questions
Will this fit my Twin Cam 96 engine?
Yes, this intake valve is designed to fit all Harley-Davidson Twin Cam 88–103 cubic-inch displacement engines. For exact model year compatibility, please confirm fitment using our Shop by Bike tool.
How does Black Diamond treatment compare to stock valves?
The German Black Diamond impregnation process penetrates .002 inches deep, providing significantly better wear and corrosion resistance, and reduced friction compared to OEM chrome or nickel-plated valves.
Is this an intake or exhaust valve?
This is an intake valve. KPMI manufactures separate part numbers for exhaust valves, which should be ordered accordingly for a complete valvetrain refresh.
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 | 191-17011 |
| WEIGHT | 0.2 lb |
