Wiseco 1340cc EVO Big Twin 10:1 Compression Piston Kit - Harley Evolution Touring, Softail & Dyna
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 1340cc Evolution Big Twin engine with this Wiseco V-Twin Piston Kit, engineered for riders who demand reliability and performance. These pistons are crafted to withstand the rigors of high-performance riding, ensuring your engine runs strong for years to come. Enhance your ride with components built for the long haul.
Why riders pick this
- Forged high-silicon aluminum construction
- Diamond-turned finish for precise fitment
- Low expansion rate reduces wear
- Works with cast iron, chrome, nikasil, and boron composite cylinders
- Engineered for strength and extended engine life
This Wiseco V-Twin piston kit is built for 1340cc EVO Big Twin engines, providing a 10:1 compression ratio to optimize your motor's output. Forged from high-silicon, low-expansion aluminum, these pistons offer exceptional strength, reduced weight, and a lower expansion rate, which minimizes piston-to-cylinder clearance wear. This meticulous design extends engine life and maintains consistent power across all cylinder compositions, including cast iron, chrome, nikasil, and boron composite.
Precision Engineering for Durability
- Forged high-silicon aluminum for superior strength
- Diamond-turned finish from CNC machines for precise dimensions
- Low expansion rate reduces piston-to-cylinder clearance wear
- Compatible with all common cylinder types
- Computerized manufacturing ensures consistent quality
Reliable Power for the Road Ahead
When it's time to refresh your 1340cc Evolution engine or push for more power, these Wiseco pistons are an excellent choice. Their robust construction and precision manufacturing provide a reliable foundation for any build, from daily riders to custom performance machines. Combine them with a performance cam and a proper dyno tune to unlock the full potential of your V-twin.
Specifications
- Brand: Wiseco
- Manufacturer Part #: K1675
- Engine: 1340cc EVO Big Twin
- Compression Ratio: 10:1
- Weight: 2.71 lbs
Common questions
What cylinder types are compatible with these pistons?
These Wiseco pistons are designed to work seamlessly with cast iron, chrome, nikasil, and boron composite cylinders, offering broad compatibility.
Do these pistons help extend engine life?
Yes, the low expansion rate of the high-silicon aluminum reduces piston-to-cylinder clearance wear, contributing to extended engine life.
Are these pistons lighter than stock components?
Yes, these forged pistons are engineered for reduced weight, which can help improve engine response and reduce overall stress on internal components.
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 | K1675 |
| WEIGHT | 2.71 lb |
| 10 | 1 Compression |
