Wiseco K0108X2 3.937 in. Bore Flat Top Forged Piston Set 5.7L HEMI Stroker

The Wiseco K0108X2 is a Professional Series forged piston kit engineered for high-performance 5.7L HEMI engine builds. Featuring a 3.937-inch bore, -2.00cc flat top design, and a 0.927-inch wrist pin, this kit is purpose-built for stroker applications using a 4.050-inch stroke. Designed for serious racers and builders who demand no-compromise performance from their HEMI powerplant.

Wiseco Professional Series pistons are forged from high-silicon, low-expansion aluminum alloy, delivering superior tensile strength, reduced weight, improved heat transfer, and extended service life compared to cast alternatives. Every piston is engineered, forged, and precision-machined in the USA at Wiseco's Mentor, Ohio manufacturing facility.

Key Features:

• 3.937-inch bore diameter — ideal for standard and slightly over-bore 5.7L HEMI builds
• -2.00cc flat top piston crown for optimized compression and flame travel
• 0.927-inch wrist pin diameter — lightweight, high-strength chromium alloy steel pin
• 4.050-inch stroker compatible design for increased displacement and torque
• Forged high-silicon aluminum construction for superior strength-to-weight ratio
• Precision CNC-machined to tight tolerances for consistent sizing and ring seal
• Compatible with OEM and aftermarket cylinder heads
• Kit includes 8 pistons, piston rings, wrist pins, and circlips
• Engineered and manufactured in the USA

The Wiseco K0108X2 Professional Series piston kit is the foundation of a high-output HEMI build, suitable for forced induction, naturally aspirated, and stroker applications where reliability and peak performance are required.