Namura Top End Repair Kit for Yamaha 1995-1998 1100 PWC .020 Over Bore 81.5mm

Top End Repair Kit for Yamaha

This Namura Top End Repair Kit for Yamaha is built for the 1995-1998 1100 PWC with a .020 over bore of 81.5mm. It includes the necessary components to refresh the upper engine section, making it a direct-fit solution for a top end rebuild.

Overview

The Namura Top End Repair Kit for Yamaha 1995-1998 1100 PWC is a complete piston and ring set designed for a .020 over bore (81.5mm). This top end repair kit provides the essential parts to restore compression and performance in your Yamaha personal watercraft engine. It is a reliable choice for a top end rebuild on the 1100cc PWC platform.

Built For Performance

• High-strength cast piston with precision-machined ring grooves
• Durable chrome-plated rings for reduced friction and long wear
• Includes wrist pin and retaining clips for secure installation
• Matched to .020 over bore specification for accurate clearance
• Engineered to meet OEM standards for Yamaha 1100 PWC engines

Fits These Machines

• for Yamaha 1100 PWC (1995-1998)

On-The-Job Use

• Full top end engine rebuild on Yamaha 1100 PWC models
• Piston and ring replacement due to wear or scoring
• Cylinder overbore service to restore cylinder geometry
• Performance restoration after loss of compression

Specs At A Glance

Good To Know

Q: Does this kit include a cylinder head gasket? A: This top end repair kit includes the piston, rings, wrist pin, and clips, but does not include a cylinder head or base gasket—those should be replaced separately.

Q: Is engine break-in required after installation? A: Yes, a proper break-in period with varying engine loads and moderate RPMs is recommended to ensure ring seating and long engine life.

Slight variation in finish or dimensions may occur between production runs, and confirm compatibility before ordering.