Wiseco P809B Big Bore Forged Piston Kit for Kawasaki ZX750 810cc 8:1

The Wiseco P809B is a high-performance 810cc big bore forged piston kit designed for the Kawasaki ZX750-E1. This oversize kit bumps the bore from the standard 66.00mm to 69.00mm (+3.00mm oversize) with an 8:1 compression ratio, making it well-suited for turbo street and performance applications. Cylinder boring is required for installation.

Kit Specifications:

• Displacement: 810cc (big bore)
• Standard Bore: 66.00mm | Actual Bore: 69.00mm | Oversize: +3.00mm
• Compression Ratio: 8:1
• Stroke: 54.14mm
• Wrist Pin Diameter: 16.00mm
• Piston Part Number: 4335M06900
• Ring Set: 2717XC
• Wrist Pin: S259 (16.00mm)
• Circlips: CW16 16mm round wire (pairs)

Kit Includes:

• 4x Wiseco 4335M06900 69.00mm forged pistons
• 4x Wiseco 2717XC 69.00mm piston ring sets
• 4x Wiseco S259 16.00mm wrist pins
• 4x Wiseco CW16 16mm wrist pin circlip pairs

Wiseco Forged Piston Advantages:

• Forged high-silicon aluminum alloy construction delivers superior strength, reduced weight, and improved heat transfer compared to cast pistons
• Diamond-turned CNC finish ensures precise sizing with no variation, compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Optimized piston skirt design maximizes horsepower and torque output
• Dedicated forgings allow for an ideal strength-to-weight ratio specific to this engine application
• Engineered, forged, and machined in the USA in Mentor, OH

Note: Cylinder boring is required for this oversize kit. No head gasket is included. Oversize pistons may require cylinder resleeving depending on bore composition.