Pistons Kit .010 over .25mm for Yamaha Wave Jammer 500 1989-1990

.010" Over Pistons Kit for Yamaha Wave Jammer 500

This .010" over pistons kit (.25mm) is a top-end rebuild set for Yamaha Wave Jammer 500 watercraft, providing oversized pistons to refresh a worn engine bore.

Overview

This pistons kit is made for the Yamaha Wave Jammer 500 and delivers the oversize pistons required after cylinders are honed or bored. At .010" over, equal to .25mm, it restores correct piston-to-wall clearance on a tired engine. It suits riders and mechanics rebuilding a 1989 or 1990 Wave Jammer 500.

Built For Performance

• .010" (.25mm) oversize pistons for rebored or honed cylinders
• Built to bring compression back on a worn Wave Jammer 500 top end
• Oversize sizing compensates for cylinder wear
• Ideal for a complete top-end refresh
• Direct fitment for the Yamaha Wave Jammer 500 platform

Fits These Machines

• for Yamaha Wave Jammer 500, 1989-1990

On-The-Job Use

• Top-end rebuilds after scoring or compression loss
• Boring or honing service on a worn 500 engine
• Keeping a classic Wave Jammer 500 running on the water

Specs At A Glance

Good To Know

Q: Will these pistons drop into my stock cylinders? A: No, .010" over pistons need the cylinders bored or honed to the oversize, so verify clearance during assembly.

Q: How many pistons come in this kit? A: Check the listing quantity against your engine's cylinder count, as some kits cover one piston and others a full set.

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