Kb Pistons Cast 10.0:1 Standard Bore Piston - Harley Sportster 883 to 1200 Conversion
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.
Transform your Harley Sportster 883 into a potent 1200cc with this cast piston from KB Pistons. Engineered for 883-to-1200 conversions, this standard bore piston delivers a healthy 10.0:1 compression ratio for a significant performance boost.
Why riders pick this
- Converts 883cc to 1200cc Sportster engines
- Delivers strong 10.0:1 compression
- Durable cast construction
- Standard bore for direct fit
This KB Pistons cast piston is specifically designed for riders looking to upgrade their Harley-Davidson Sportster from an 883cc to a 1200cc engine. With a 10.0:1 compression ratio and standard bore sizing, it provides an excellent balance of performance and reliability for your displacement conversion. This piston is a direct replacement for stock Sportster pistons in standard bore applications.
Unleash 1200cc Power
- Designed for 883 to 1200cc Sportster engine conversions
- Achieves a performance-oriented 10.0:1 compression ratio
- Durable cast construction for long-term engine life
- Standard bore sizing for compatible cylinders
The Heart of Your Big-Bore Conversion
Converting your 883 Sportster to 1200cc is one of the most impactful upgrades you can make for increased torque and horsepower. This KB Pistons standard bore piston is a crucial component of that conversion, ensuring you get optimal performance from your enlarged engine. Always confirm your cylinder bore is standard size for proper fitment with this piston. Pair it with other performance upgrades for a truly transformed riding experience.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB272.STD
- UPC: 800745131607
- Compression Ratio: 10.0:1
- Length: 9 in
- Width: 4 in
- Height: 4 in
- Weight: 2.61 lbs
- Country of Origin: Mexico
Common questions
Will this piston work for an 883 to 1200 conversion?
Yes, this piston is specifically designed for Harley-Davidson Sportster 883 to 1200cc displacement conversions.
What compression ratio does this piston provide?
This piston is engineered to deliver a 10.0:1 compression ratio in a 1200cc Sportster engine.
Is this a standard bore piston?
Yes, this part number is for standard bore applications. If your cylinders require an overbore, you will need a different KB Piston part number.
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 | 824-01256 |
| WEIGHT | 2.61 lb |
| 10.0 | 1 Compression |
