Wiseco Tracker Flat Top 8.5:1 +.030 Piston Kit - Harley Evolution Big Twin
About Wiseco
Wiseco has forged pistons in Mentor, Ohio since 1941, supplying everything from factory race teams to big-bore street builds. Forged construction is what lets a V-twin survive higher compression and more cylinder pressure than the stock cast piston was designed for.
Enhance the performance and longevity of your Evolution Big Twin with the Wiseco Tracker Flat Top Piston Kit. This kit is built for durability and precision, providing a robust solution for engine rebuilds or performance upgrades. Each piston features forged construction and advanced coatings to withstand demanding conditions.
Why riders pick this
- Forged flat top piston for Evolution Big Twin
- 8.5:1 compression ratio for pump gas
- +.030 overbore for cylinder refresh
- ArmorGlide skirt coating reduces friction
- Force-fed pin oiling for enhanced lubrication
- Includes precision rings for optimal sealing
The Wiseco Tracker Flat Top Piston Kit is engineered for Evolution Big Twin 1340cc engines, offering an 8.5:1 compression ratio and a +.030 overbore. This specific sizing is ideal for engines requiring a significant bore to clean up cylinder wear or to achieve a slight displacement increase. The forged crown ensures exceptional strength, while features like generous valve pockets and optimized pin oiling contribute to a long-lasting and reliable engine.
Designed for Lasting Performance
- Forged piston crown with generous valve pockets for clearance
- Precision-fit rings ensure ultimate sealing and power transfer
- Force-fed pin oiling for enhanced piston pin lubrication
- ArmorGlide skirt coating reduces friction and scuff resistance
Rebuild with Confidence
Opting for a +.030 overbore allows for a complete refresh of your cylinders, eliminating wear and restoring optimal compression. This 8.5:1 compression ratio is compatible with standard pump gasoline, making it a practical choice for street-focused Evolution Big Twins. Remember to confirm your engine's specific requirements and pair this piston kit with a new top-end gasket set for a complete and secure rebuild.
Specifications
- Brand: Wiseco
- Manufacturer Part #: K0215P3
- Engine: EVO Flat Big Twin 1340
- Compression Ratio: 8.5:1
- Oversized: +.030 inch
- Length: 9.5 in
- Width: 4.87 in
- Height: 4 in
- Weight: 2.75 lbs
- Country of Origin: United States of America
Common questions
What engine does this piston kit fit?
This Wiseco Tracker piston kit is designed for Evolution Big Twin 1340cc engines requiring a +.030 overbore. Please confirm your engine's specifications before ordering.
Does this kit include gaskets?
No, gasket kits are sold separately. You will need to purchase a complete top-end gasket set specific to your Evolution Big Twin to complete the installation.
What compression ratio do these pistons provide?
These pistons are engineered for an 8.5:1 compression ratio, suitable for stock or mildly modified Evolution Big Twin engines running on pump gas.
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 | Wiseco |
| TYPE | Piston kits & Components |
| SKU | K0215P3 |
| WEIGHT | 2.75 lb |
| 8.5 | 1 |
