Namura .020 Over Bore Piston Kit for Yamaha WaveRunner VX 1100 2005-2015 76.5mm

.020 Over Bore Piston Kit for Yamaha

This .020 over bore piston kit for Yamaha WaveRunner VX 1100 from 2005 to 2015 includes a 76.5mm piston designed to restore compression and performance in high-hour engines.

Overview

This .020 over bore piston kit for Yamaha WaveRunner VX 1100 delivers a 76.5mm piston that refreshes worn cylinders and boosts power output. The .020 over bore piston kit is built for Yamaha WaveRunner owners seeking reliable engine restoration. The kit includes rings and pin for a complete top-end rebuild.

Built For Performance

• Oversized .020 over bore design removes cylinder taper and scoring
• Premium aluminum alloy construction for heat dissipation and strength
• Precision-machined ring grooves ensure proper ring seal
• Includes wrist pin and circlips for secure installation
• Compatible with standard Yamaha WaveRunner VX 1100 crankshaft assembly

Fits These Machines

• for Yamaha WaveRunner VX 1100 (2005-2015)

On-The-Job Use

• Restoring top-end performance in personal watercraft with high hours
• Rebuilding engines after piston seizure or bore scoring
• Replacing original pistons during complete engine overhaul
• Enlarging bore for increased displacement and torque
• Used by marine mechanics and DIY owners for reliable jet ski repair

Specs At A Glance

Good To Know

Q: Is this piston kit compatible with stock cylinder? A: This kit is intended for use with a cylinder that has been bored to 76.5mm; the stock cylinder must be machined to match the oversize piston.

Q: Do I need to replace the wrist pin and circlips? A: Yes, the kit includes a new wrist pin and circlips for a secure installation; always replace these components during rebuild.

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