2 Namura .020 Over Bore Piston Kits for Yamaha 700 PWC fits 1993-2020 81.5mm

2 Namura .020 Over Bore Piston Kits for Yamaha 700 PWC

These Namura .020 over bore piston kits are replacement pistons designed for Yamaha 700 PWC (personal watercraft) models from 1993 to 2020, featuring an 81.5mm bore size. They restore compression and performance in high-hour engines.

Overview

These Namura .020 over bore piston kits are precision-machined replacements for Yamaha 700 PWC engines, offering a cost-effective way to rebuild your watercraft's powerhead. Each kit includes a piston, rings, wrist pin, and circlips for a complete overhaul. Intended for 1993-2020 Yamaha 700 PWC models with a standard 81.5mm bore, these overbore kits allow a fresh start for worn cylinders. The Namura .020 over bore piston kits are popular among PWC enthusiasts seeking reliable performance.

Built For Performance

• Hyperutectic aluminum alloy construction for high-strength and thermal stability
• Precision-machined 81.5mm bore with .020 overbore for exact fit
• Included rings, wrist pin, and circlips for a complete piston assembly
• Engineered to meet or exceed OEM specifications for durability
• Compatible with standard Yamaha 700 PWC connecting rods

Fits These Machines

• for Yamaha 700 PWC (1993-2020)

On-The-Job Use

• Engine rebuilds for personal watercraft
• Restoring lost compression in high-mileage PWCs
• Performance restoration after cylinder wear or scoring

Specs At A Glance

Good To Know

Q: Do these piston kits include rings? A: Yes, each kit comes with piston rings, a wrist pin, and circlips; you may need to purchase gaskets and seals separately.

Q: What is the recommended cylinder preparation? A: The cylinder bore must be professionally honed to 81.5mm with the appropriate finish for the hyperutectic rings; always measure clearance before assembly.

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