809M08150 Wiseco .060 Piston for Kawasaki JT1100 1100STX 1997-1999 81.50 mm

Piston for Kawasaki JT1100 1100STX

This Wiseco .060 oversize piston with part number 809M08150 measures 81.50 mm and is made to replace a worn piston in a Kawasaki JT1100 1100STX personal watercraft engine.

Overview

This Wiseco piston is a .060 oversize replacement built for the Kawasaki JT1100 1100STX jet ski engine. The 81.50 mm bore piston brings compression and power back on a top end rebuild for riders keeping their 1100STX running strong.

Built For Performance

• Wiseco forged piston construction for strength under high rpm use
• .060 oversize, 81.50 mm bore for a fresh cylinder fit after boring
• Part number 809M08150 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 a larger 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 .060 oversize piston requires the cylinder to be bored and honed to match the 81.50 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.