809M08050 Wiseco .020 Piston for Kawasaki JT1100 1100STX 1997-1999 80.50 mm

Piston for Kawasaki JT1100 1100STX

This Wiseco .020 oversize piston with part number 809M08050 measures 80.50 mm and is built to replace the worn piston in a Kawasaki JT1100 1100STX personal watercraft engine.

Overview

This Wiseco piston is a .020 oversize replacement made for the Kawasaki JT1100 1100STX jet ski engine. The 80.50 mm bore piston restores compression and power on a top end rebuild for riders keeping their 1100STX on the water.

Built For Performance

• Wiseco forged piston construction for strength under high rpm use
• .020 oversize, 80.50 mm bore for a fresh cylinder fit after boring
• Part number 809M08050 for easy cross reference
• Designed to handle the heat and load of two stroke marine engines
• Sold as a single piston for one cylinder rebuild

Fits These Machines

• for Kawasaki JT1100 1100STX 1997
• for Kawasaki JT1100 1100STX 1998
• for Kawasaki JT1100 1100STX 1999

On-The-Job Use

• Top end rebuilds on Kawasaki 1100STX jet skis
• Restoring compression after cylinder wear or scoring
• Fresh bore and hone jobs requiring an oversize piston
• Riders rebuilding an engine for reliable weekend water use

Specs At A Glance

Good To Know

Q: Do I need to bore my cylinder for this piston? A: Yes, a .020 oversize piston requires the cylinder to be bored and honed to match the 80.50 mm size for proper clearance.

Q: Is this piston sold as a set? A: This listing is for a single piston, so order the quantity needed for your engine rebuild.

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