Kb Pistons Hypereutectic Cast Piston 7.2:1 Standard - 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.
Reinvigorate your Shovelhead 80ci engine with KB Pistons Hypereutectic Cast Pistons. Designed for riders seeking to maintain or restore original compression with enhanced durability, these pistons are a smart choice for a reliable rebuild.
Why riders pick this
- 16% silicon hypereutectic alloy
- High thermal stability and low expansion
- Tight piston-to-cylinder clearances
- Reduces engine wear and noise
- 7.2:1 compression for Shovelhead 80ci
These hypereutectic cast pistons are formulated with a 16% silicon content alloy, which is key to their high thermal stability and minimal expansion. This advanced composition allows for tighter piston-to-cylinder wall clearances, crucial for air-cooled engines, leading to improved ring seal, reduced blowby, and a quieter, more efficient running engine with less wear over time.
Built for Classic V-Twin Reliability
- 16% silicon hypereutectic alloy for high thermal stability
- Low thermal expansion allows tight piston-to-cylinder clearances
- Reduces engine wear and mechanical noise
- Optimal ring seal for consistent power delivery
- Suitable for stock to mild compression ratios up to 10.5:1
Authentic Performance for Your Shovelhead
With a 7.2:1 compression ratio and standard bore, these pistons are perfect for restoring your Shovelhead 80ci engine to its original specifications or for a mild performance build. They are designed to operate efficiently on pump fuel, ensuring your classic V-twin runs reliably. Pair these pistons with a cylinder refresh for a complete top-end overhaul that brings new life to your ride.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB288.STD
- UPC: 800745063618
- Engine: Shovelhead 80ci
- Compression Ratio: 7.2:1 Standard
- Length: 9.5 in
- Width: 4.8 in
- Height: 4.6 in
- Weight: 2.5 lbs
- Country of Origin: Mexico
Common questions
What compression ratio is this piston rated for?
This piston is rated for 7.2:1 standard compression, suitable for stock to mild ratios up to 10.5:1 on pump fuel.
Why is the silicon content important in these pistons?
The 16% silicon content provides high thermal stability and low expansion, allowing for tighter piston-to-cylinder clearances that reduce noise and wear, which is particularly beneficial for air-cooled Shovelhead engines.
Will these pistons fit my Shovelhead 80ci engine?
Yes, these pistons are designed for Shovelhead 80ci engines at standard bore. Always confirm your cylinder bore measurements 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 | Kb Pistons |
| TYPE | Piston kits & Components |
| SKU | 824-01150 |
| WEIGHT | 2.5 lb |
| 7.2 | 1 Compression |
