Kb Pistons Hypereutectic Cast Piston 10.5:1 .005 - Harley Twin Cam 88 to 95ci
About Kb Pistons
KB Performance Pistons builds hypereutectic and forged pistons for American V-twin engines, and is a long-standing choice for big-bore and stock-replacement rebuilds where budget and durability both matter.
Unleash the full potential of your Twin Cam 88 to 95ci engine with a set of KB Pistons Hypereutectic Cast Pistons. Engineered for optimal performance in air-cooled Harley engines, these pistons offer a 10.5:1 compression ratio.
Why riders pick this
- 16% silicon hypereutectic alloy for durability
- Low thermal expansion ensures tight ring seal
- Reduces engine noise and wear
- Optimized for air-cooled Twin Cam engines
- Ideal for stock or mild compression ratios
These hypereutectic cast pistons are built from a 16% silicon alloy, ensuring tight piston-to-cylinder clearances and reduced wear. This advanced construction contributes to quieter operation, making them an excellent choice for riders seeking a smooth and reliable engine upgrade.
Optimized for Air-Cooled Performance
- Constructed from durable 16% silicon hypereutectic alloy
- Designed for low thermal expansion, promoting a tight ring seal
- Reduces engine noise and wear for a smoother ride
- Ideal for stock or mild boost applications on pump fuel
Engineered for Durability and Reliability
KB Pistons are a trusted choice for Twin Cam engine builders looking for durability without compromising performance. These pistons are specifically designed to perform under the unique demands of air-cooled Harley-Davidson powerplants, providing a solid foundation for your next build. They are a smart choice for maintaining reliability while enhancing your bike's power delivery.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB411.005
- UPC: 800745152268
- Engine Application: Twin Cam 88 to 95ci
- Compression Ratio: 10.5:1
- Length: 9.5 in
- Width: 4.8 in
- Height: 4.6 in
- Weight: 3.1 lbs
- Country of Origin: Mexico
Common questions
What compression ratio are these pistons designed for?
These pistons are engineered for a 10.5:1 compression ratio and are suitable for stock or mild performance builds.
Are these pistons suitable for boosted applications?
They are designed for stock or mild boost applications on pump fuel. For extreme boost or nitrous, forged pistons might be a better choice.
Do these pistons require any special installation considerations?
These are precision-machined components. We recommend professional installation to ensure proper clearances and optimal engine performance. Confirm exact fitment for your year and model using our Shop by Bike tool.
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 | Kb Pistons |
| TYPE | Piston kits & Components |
| SKU | 824-01368 |
| WEIGHT | 3.1 lb |
| 10.5 | 1 Compression |
