WISECO SKU: K1684

Wiseco Forged High-Silicon Aluminum V-Twin Piston Kit - Harley & Indian V-Twin

$447.95
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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 V-twin engine with the Wiseco V-Twin Piston Kit, engineered for both high-performance builds and dependable stock rebuilds. These pistons deliver superior strength and reduced weight, making them a significant upgrade over OEM components. Experience enhanced durability and improved heat transfer for a more reliable and powerful ride on your Harley-Davidson or Indian Motorcycle.

Why riders pick this

  • Forged high-silicon aluminum construction
  • Diamond-turned finish from CNC machining
  • Compatible with all common cylinder bore types
  • Reduced weight and improved durability
  • Superior strength and heat transfer

This Wiseco V-Twin piston kit is meticulously engineered from high-silicon, low-expansion aluminum, a material chosen for its exceptional strength and ability to dissipate heat efficiently. This construction not only reduces the overall weight of the reciprocating assembly but also significantly improves durability, ensuring a longer engine life. The pistons feature a precision diamond-turned finish, achieved through state-of-the-art CNC machining, which guarantees consistent dimensions and optimal piston-to-cylinder clearance. They are fully compatible with all common cylinder bore types, including cast iron, chrome, nikasil, and boron composite, offering broad applicability for various V-twin engines.

Robust Design for Enhanced Engine Life

  • Forged high-silicon aluminum construction for superior strength
  • Diamond-turned finish from CNC machining for precise fitment
  • Compatible with cast iron, chrome, nikasil, and boron composite bores
  • Wide range of oversize options available for cylinder sleeve applications
  • Reduced weight and improved durability for long engine life

The Ideal Choice for Performance and Reliability

Whether you're performing a routine engine refresh or undertaking a serious performance build, these Wiseco pistons provide the foundation for a robust and reliable V-twin. Their advanced design and material composition allow your engine to handle increased demands with greater ease. For riders looking to maximize their engine's potential, combining these pistons with a performance cam and a custom dyno tune is the path to unlocking significant gains.

Specifications

  • Brand: Wiseco
  • Manufacturer Part #: K1684
  • Weight: 6.1 lbs

Common questions

Will this piston work in my Harley or Indian cylinder?

Yes, Wiseco pistons are compatible with cast iron, chrome, nikasil, and boron composite cylinder bores commonly found in Harley-Davidson and Indian Motorcycle engines.

Can I use an oversize piston in a sleeved cylinder?

Yes, Wiseco offers a wide range of oversize piston options designed to accommodate sleeved cylinders or those that have been bored out. Always verify your specific needs.

How do these pistons compare to OEM components?

Wiseco pistons are forged from high-silicon aluminum, offering superior strength, reduced weight, and improved heat transfer compared to many OEM cast pistons, leading to enhanced performance and durability.

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.
BRANDWiseco
TYPEPiston kits & Components
SKUK1684
WEIGHT6.1 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.5
2 RATINGS
5★ 1
4★ 1
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Aug 11, 2020

worked great .a little pricey compared to other brands

— Anonymous
✓ VERIFIED
Jan 16, 2020

I THINK WISECO IS A VERY GOOD PRODUCT. THE ITEM DOESN'T FIT WHAT IT CLAIMS TO FIT, RETURNED

— Anonymous