Wiseco 4380M07500 Forged Piston Kit Kawasaki CR - GPZ1100 ZX1100 LTD1100 75mm 9.5 1

The Wiseco 4380M07500 is a forged high-performance piston designed for the 1983–1984 Kawasaki GPZ1100, ZX1100, and LTD 1100 engines. With a 75.00mm bore and 9.5:1 compression ratio, this piston delivers a performance upgrade over OEM while maintaining reliable street and track usability.

Key Features:

• Forged high-silicon, low-expansion aluminum alloy construction for superior strength, reduced weight, improved heat transfer, and longer service life
• 75.00mm bore diameter — oversize +2.5mm, requiring professional cylinder boring or sleeving
• 9.5:1 compression ratio for optimized power and throttle response
• Innovative forging design and precision piston skirt profile for maximum horsepower and torque
• Wiseco's proprietary forging process compresses molecular structure, increasing density and aligning grain flow for superior impact and fatigue resistance
• Each piston is precision-CNC machined using the latest 3D design techniques and finite element modeling

Kit Contents:

• 1x Forged piston (4380M07500)
• Piston ring set (2953XG, 75.00mm)
• Wrist pin
• Circlips

Important Installation Note: This is an oversize piston. Professional cylinder boring or sleeving is required prior to installation. Each cylinder bore should be individually measured and matched to each piston for proper clearance.

Wiseco has been a trusted name in forged piston technology for over 75 years, supplying winning teams across Supercross, Motocross, Superbike, and drag racing disciplines worldwide.