Wiseco Tracker Flat Top 8.5:1 +.020 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.
Upgrade your Evolution Big Twin with the Wiseco Tracker Flat Top Piston Kit, engineered for riders who demand reliability and performance. This kit provides a solid foundation for rebuilding or enhancing your 1340cc engine. Each piston is forged for maximum strength and features advanced coatings for reduced friction.
Why riders pick this
- Forged flat top piston for Evolution Big Twin
- 8.5:1 compression ratio for street use
- +.020 overbore for engine rebuilding
- ArmorGlide skirt coating reduces friction
- Force-fed pin oiling for enhanced durability
- Includes precision rings for sealing
The Wiseco Tracker Flat Top Piston Kit for Evolution Big Twin 1340cc engines comes with an 8.5:1 compression ratio and a +.020 overbore, perfect for restoring cylinder integrity and boosting performance. Forged construction ensures these pistons can handle the demands of both street riding and more spirited applications. With generous valve pockets and optimized lubrication, this kit is designed for long-term durability and consistent power delivery.
Built for Reliable Power
- Forged piston crown with large valve pockets for valve clearance
- Precision-fit compression and oil rings ensure optimal sealing
- Force-fed pin oiling enhances lubrication to the piston pin
- ArmorGlide skirt coating reduces friction and wear
Refresh Your EVO Engine
This +.020 oversized piston kit is an excellent choice when boring out your cylinders to clean up wear and restore compression. The 8.5:1 compression ratio is suitable for most street applications and compatible with pump gasoline. For best results, ensure your cylinders are properly bored and honed to match, and pair with a quality top-end gasket kit for a complete and leak-free rebuild.
Specifications
- Brand: Wiseco
- Manufacturer Part #: K0215P2
- Engine: Harley EVO Flat Big Twin 1340cc
- Compression Ratio: 8.5:1
- Overbore: +.020
- 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 +.020 overbore. Always verify your engine's bore specifications.
What compression ratio is this kit rated for?
These pistons are rated for an 8.5:1 compression ratio, suitable for stock or mildly modified Evolution Big Twin engines running on pump gas.
Do I need to purchase gaskets separately?
Yes, gasket kits are sold separately. You will need a complete top-end gasket set for your Evolution Big Twin to complete the installation.
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 | K0215P2 |
| WEIGHT | 2.75 lb |
| 8.5 | 1 |
