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The WISECO V-Twin Piston Kit 1340 Evo Big Twin 10:1 Compression K1668 is a forged piston solution designed for performance-focused applications. WISECO pistons are forged from high-silicon, low-expansion aluminum to provide strength, reduced weight, improved heat transfer, and extended service life.
A diamond-turned finish produced on CNC computer-controlled turning centers helps ensure a precise, consistent surface finish with no size variation. The piston can be installed in cylinder bores made from cast iron, chrome, Nikasil, and boron composite materials.
WISECO offers a broad range of oversize pistons to help extend the service life of cast iron-lined cylinders. With replacement cylinder sleeves, chrome, Nikasil, and boron composite cylinders can also be resleeved to accept WISECO oversize pistons. The WISECO manufacturing facility serves both high-performance racers and recreational enthusiasts with forged piston products.
Features:
- Forged high-silicon, low-expansion aluminum construction for strength, reduced weight, improved heat transfer, and longer life
- Diamond-turned finish produced using CNC computer-controlled turning centers
- Designed for use with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
- Oversize piston availability helps increase the life of cast iron-lined cylinders
- 10:1 compression ratio for 1340 Evo Big Twin applications
- WISECO part number K1668

