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The Wiseco K1667 V-Twin Piston Kit is designed for the 1340 Evo Big Twin application and features a 10:1 compression ratio. Wiseco pistons are forged from high-silicon, low-expansion aluminum to provide strength, reduced weight, improved heat transfer, and extended service life.
Each Wiseco piston receives a diamond-turned finish produced on CNC computer-controlled turning centers, supporting a precise, consistent finish with no size variation. Wiseco pistons can be installed in cylinder bores using cast iron, chrome, Nikasil, and boron composite compositions.
Wiseco also offers oversize piston options to help extend the service life of cast iron-lined cylinders. With replacement cylinder sleeves, chrome, Nikasil, and boron composite cylinders can be resleeved to accept Wiseco oversize pistons. Manufactured in Wiseco’s computerized facility, this piston kit is intended for high-performance racers and recreational enthusiasts seeking a forged piston solution.
Features:
- Forged high-silicon, low-expansion aluminum construction supports strength, reduced weight, improved heat transfer, and longer life.
- Diamond-turned finish from CNC computer-controlled turning centers provides a consistent finish with no size variation.
- Designed for use with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions.
- Oversize piston availability can help extend the life of cast iron-lined cylinders and support resleeved chrome, Nikasil, and boron composite cylinders.
- 10:1 compression ratio for the 1340 Evo Big Twin application.
- Manufactured by Wiseco for high-performance racers and recreational enthusiasts.

