Kb Pistons Cast Sportster Piston 9.0:1 .020 - Harley Sportster 54ci
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.
Revitalize your Harley Sportster 54ci engine with the Kb Pistons Cast Sportster Piston, engineered for a 9.0:1 compression ratio and a .020 oversized bore. This piston offers a direct replacement or a significant upgrade for your V-twin powerplant.
Why riders pick this
- Durable cast piston construction
- Optimized 9.0:1 compression ratio
- .020 inch oversized bore
- Direct replacement or upgrade
- Ideal for street and moderate performance
These Kb Pistons Cast Sportster Pistons are designed specifically for 54ci V-twin engines, providing a 9.0:1 compression ratio and a .020 oversized bore. Crafted from durable cast construction, these pistons serve as an excellent component for both routine maintenance and performance rebuilds. They are built to withstand the demands of street riding and moderate performance builds, ensuring reliable operation and consistent power delivery for your Sportster.
Reliable Power for Your Sportster
- Durable cast piston construction
- Optimized 9.0:1 compression ratio
- .020 inch oversized bore for rebuilds
- Direct fitment for 54ci Sportster engines
- Suitable for street riding and moderate performance builds
The Foundation for a Strong Sportster Build
When installing these Kb Pistons, it's crucial to ensure your cylinders are bored and honed precisely to the .020 oversize specification for proper fit and optimal performance. This precision is key to achieving the desired compression and a long-lasting engine. These pistons are an ideal choice for Harley Sportster owners looking to rebuild their 54ci motor with dependable components that enhance overall ride quality and engine response.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB408C.020
- UPC: 800745151186
- Compression Ratio: 9.0:1
- Bore Size: 0.020 in oversized
- Engine Displacement: 54 ci
- Weight: 2.5 lbs
- Country of Origin: Mexico
Common questions
Will this piston fit my Harley Sportster?
This piston is designed for 54ci Sportster engines. It is crucial to verify your engine displacement and cylinder block compatibility before ordering to ensure correct fitment.
What does '.020 oversized' mean?
The '.020 oversized' indicates that the piston bore is 0.020 inches larger than the stock size. Your cylinders must be bored and honed to this exact dimension for proper fitment.
Is this a cast or forged piston?
This is a cast piston, which is suitable for street riding and moderate performance builds. Cast pistons offer good durability and are a cost-effective option for many Sportster owners.
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 | 824-01202 |
| WEIGHT | 2.5 lb |
