Wiseco Tracker Flat Top 8.5:1 STD 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.
Restore the heart of your Evolution Big Twin with the Wiseco Tracker Flat Top Piston Kit. Designed for standard bore 1340cc engines, this kit ensures reliable performance and longevity. Each piston is forged for superior strength and features advanced coatings to reduce friction and wear.
Why riders pick this
- Forged flat top piston for Evolution Big Twin
- 8.5:1 compression ratio for pump gas
- Standard bore for factory spec rebuilds
- ArmorGlide skirt coating reduces friction
- Force-fed pin oiling for enhanced durability
- Includes precision rings for optimal sealing
This Wiseco Tracker Piston Kit is specifically engineered for Evolution Big Twin 1340cc engines, featuring a flat top design with an 8.5:1 compression ratio and standard bore. It's an ideal choice for riders looking to refresh their engine while maintaining factory specifications or for those undertaking a meticulous rebuild. The forged construction provides exceptional durability, ensuring these pistons can handle the demands of daily riding and light performance use.
Optimized for Street Reliability
- Forged piston crown with generous valve pockets for clearance
- Precision-fit rings ensure ultimate sealing and consistent power
- Force-fed pin oiling for enhanced lubrication and durability
- ArmorGlide skirt coating reduces friction and scuff resistance
The Foundation for Your EVO Rebuild
Maintaining the standard bore size is often preferred for engines that haven't experienced significant cylinder wear, providing a direct replacement that meets original specifications. The 8.5:1 compression ratio is perfectly suited for pump gasoline, offering a balance of performance and fuel efficiency. Pair this piston kit with a comprehensive top-end gasket set for a complete and reliable Evolution Big Twin engine refresh.
Specifications
- Brand: Wiseco
- Manufacturer Part #: K0215PS
- Engine: EVO Flat Big Twin 1340
- Compression Ratio: 8.5:1
- Bore: Standard
- 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 compression ratio does this piston kit provide?
These pistons are engineered for an 8.5:1 compression ratio, which is suitable for stock Evolution Big Twin engines and pump gas applications.
Is a gasket kit included with this piston kit?
No, gasket kits are sold separately. You will need to purchase a complete top-end gasket set specific to your Evolution Big Twin.
What bore size is this piston kit?
This kit features a standard bore size. Always measure your cylinder bore to confirm it's within standard specifications 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 | Wiseco |
| TYPE | Piston kits & Components |
| SKU | K0215PS |
| WEIGHT | 2.75 lb |
| 8.5 | 1 |
