Namura Piston Kit for Kawasaki 1995-2006 900 ZXI STS & STX .020 Over Bore 73.5mm

.020 Over Bore Piston Kit 73.5mm for Kawasaki 900 ZXI STS & STX

This .020 over bore piston kit is designed for Kawasaki 900 ZXI STS and STX models from 1995 to 2006, with a 73.5mm bore size to refresh worn cylinders. It provides a reliable replacement piston set for maintaining performance in these personal watercraft.

Overview

This .020 over bore piston kit for Kawasaki 900 ZXI STS and STX restores engine compression and power by replacing worn pistons with an oversize 73.5mm option. It is engineered to meet the demands of high-performance personal watercraft, ensuring longevity and consistent operation.

Built For Performance

• Forged from high-strength aluminum alloy for maximum strength
• .020 oversize design restores cylinder wall clearance
• Complete kit includes rings, wrist pin, and retaining clips
• Optimized skirt profile for reduced noise and friction
• Heat-treated and stress-relieved for reliability

Fits These Machines

• for Kawasaki 900 ZXI STS (1995-2006)
• for Kawasaki 900 ZXI STX (1995-2006)

Specs At A Glance

Good To Know

Q: Do I need to replace the wrist pin and clips? A: Yes, the kit includes new wrist pin and circlips; always use fresh clips to prevent failure.

Q: What break-in procedure is recommended? A: Follow standard piston break-in with varying RPM for the first hour, avoiding sustained full throttle.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.