Kb Pistons Cast 8.9:1 .005 Oversized Piston - Harley Sportster EVO XL 74ci
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.
Refresh your Harley Sportster Evolution XL 74ci engine with this cast piston from KB Pistons. Featuring an 8.9:1 compression ratio and a .005 oversized bore, it's perfect for high-mileage rebuilds or those seeking a slight displacement increase.
Why riders pick this
- 8.9:1 compression for EVO XL 74ci
- Durable cast construction
- Features .005 inch oversized bore
- Ideal for high-mileage engine rebuilds
This KB Pistons cast piston is engineered for Evolution XL 74 cubic inch engines, offering a durable and precise component for your V-twin rebuild. With an 8.9:1 compression ratio and a .005 oversized bore, it's designed to bring new life to worn cylinders, ensuring tight tolerances and efficient power delivery.
Precision for Evolution XL Rebuilds
- Durable cast piston construction for long-term reliability
- Achieves an 8.9:1 compression ratio in 74ci EVO XL engines
- Features a .005 inch oversized bore to correct cylinder wear
- Ideal for refreshing high-mileage Harley Sportster engines
The Foundation of a Strong Engine
When undertaking an engine rebuild, selecting the correct piston is paramount. This .005 oversized piston requires your cylinders to be machined to match, ensuring optimal piston-to-cylinder wall clearance and maximizing engine efficiency. It's a critical step in restoring your Evolution XL Sportster to its peak performance, delivering consistent power and a smooth ride.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB295.005
- UPC: 800745064196
- Length: 9.5 in
- Width: 4.8 in
- Height: 4.6 in
- Weight: 2.6 lbs
- Country of Origin: Mexico
Common questions
What does the +.005 oversized bore mean?
This piston is 0.005 inches larger than standard bore, meaning your cylinders must be bored to this size by a machine shop for proper fitment.
What compression ratio does this piston provide?
This piston delivers an 8.9:1 compression ratio when installed in a 74 cubic inch EVO XL engine.
Will this fit my Sportster?
This piston fits Evolution XL Sportster engines with 74 cubic inch displacement that require a .005 oversized piston. Always confirm your specific engine requirements.
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 | 824-01206 |
| WEIGHT | 2.6 lb |
| 8.9 | 1 Compression |
