Wiseco Pistons K1642 Harley 1340 Piston Kit 8.5:1 Compression

The Wiseco K1642 piston kit is engineered specifically for Harley-Davidson 1340cc Evolution engines, delivering an 8.5:1 compression ratio for improved performance and reliability. This complete kit includes high-performance forged pistons, rings, wrist pins, and circlips for a comprehensive rebuild solution.

Key Features:

• Forged from high-silicon, low-expansion aluminum alloy for superior strength and reduced weight
• Diamond-turned finish from CNC computer-controlled machining ensures perfect surface quality with zero size variation
• 8.5:1 compression ratio optimized for street performance and pump gas compatibility
• Compatible with all modern cylinder bore compositions including cast iron, chrome, Nikasil, and boron composite
• Improved heat transfer properties extend engine life and reduce operating temperatures
• Precision-engineered ring package ensures optimal seal and long-term durability

Wiseco's advanced forging process and computerized manufacturing deliver pistons that meet the demanding requirements of both high-performance riders and recreational enthusiasts. Each piston is manufactured to exact tolerances, ensuring reliable fitment and consistent performance across all cylinder configurations. The low-expansion aluminum alloy minimizes piston-to-wall clearance changes during temperature fluctuations, reducing wear and extending service intervals.