Kb Pistons Hypereutectic Cast Piston 7.2:1 .010 - Harley Shovelhead 80ci
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.
Enhance the performance and longevity of your Shovelhead 80ci engine with the Kb Pistons Hypereutectic Cast Piston. Crafted from a high-silicon alloy, these pistons are designed to manage thermal expansion effectively in air-cooled V-twin powerplants.
Why riders pick this
- 16% silicon hypereutectic alloy construction
- Low thermal expansion for tight clearances
- Optimized 7.2:1 compression ratio
- Enhanced ring seal and reduced engine noise
- Designed for stock to mild builds on pump fuel
These Kb Pistons Hypereutectic Cast Pistons are engineered for Shovelhead 80ci engines, featuring a 7.2:1 compression ratio and a .010 oversize. The specific 16% silicon content in the hypereutectic alloy is key to its performance, allowing for minimal thermal expansion. This characteristic enables tighter piston-to-cylinder clearances, which in turn promotes an excellent ring seal and reduces engine noise for a smoother, more efficient operation. They are perfectly suited for stock to mild compression builds using pump fuel.
Advanced Alloy for Air-Cooled Efficiency
- 16% silicon hypereutectic alloy resists thermal expansion
- Maintains tight piston-to-cylinder clearance
- Optimized ring seal for consistent power delivery
- Reduces engine noise for a more refined ride
- Rated for stock to mild compression ratios on pump fuel
A Smart Choice for Your Shovelhead Rebuild
Selecting the right piston is crucial for any engine build. These Kb Pistons offer a robust solution for Shovelhead 80ci motors, providing the thermal stability needed for air-cooled applications. Ensure your cylinders are bored to the .010 oversize for a precise fit and optimal performance. They are an excellent choice for riders looking for reliable power and improved efficiency on their Harley Touring, Softail, or Dyna models.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB288.010
- UPC: 800745063656
- Bore Size: .010 over
- Compression Ratio: 7.2:1
- Engine Displacement: 80 cubic inches (Shovel)
- Weight: 2.5 lbs
- Country of Origin: Mexico
Common questions
What compression ratio is this piston suited for?
This piston is designed for a 7.2:1 compression ratio, ideal for stock to mild compression air-cooled Shovelhead 80ci engines running on pump fuel.
What does '.010 over' mean?
The '.010 over' indicates that the piston is .010 inches larger than the standard bore. Your cylinders will need to be machined to this precise oversize for proper fitment.
Will these pistons improve engine noise?
Yes, the hypereutectic alloy's low thermal expansion allows for tighter piston-to-cylinder clearance, which can contribute to reduced engine noise and quieter operation.
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 | 824-01152 |
| WEIGHT | 2.5 lb |
