Wiseco Pistons 4012P2 High Performance Forged Piston Kit for Harley Pan/Shovelhead 9:1 Compression

The Wiseco 4012P2 is a high-performance forged piston kit engineered specifically for Harley-Davidson Panhead and Shovelhead engines. This precision-manufactured piston delivers 9:1 compression ratio with a 3.457" bore diameter, designed to maximize power output and reliability in vintage big twin applications.

Key Features:

• Forged from high-silicon aluminum alloy for superior strength and durability under extreme operating conditions
• Innovative forging design optimized for maximum horsepower and torque gains
• Advanced piston skirt geometry reduces friction and improves power transfer
• 9:1 compression ratio ideal for street performance and pump gas compatibility
• 3.457" bore size for standard or rebuild applications
• Complete kit includes piston, rings, wrist pin, and circlips for convenient installation

Wiseco pistons are manufactured to exacting tolerances using aerospace-grade materials and heat treatment processes. The high-silicon aluminum alloy construction provides excellent thermal stability and wear resistance, while the optimized skirt design minimizes friction losses for improved throttle response. This piston kit is an excellent choice for restoring or building reliable performance into classic Harley-Davidson Pan and Shovelhead engines.

Note: Oversize pistons require professional cylinder boring and honing services for proper fitment.