790M08400 Wiseco Piston for Yamaha Wave Runner Pro VXR 700 1993-1994 84mm

Wiseco .120 Piston for Yamaha Wave Runner Pro VXR 700

This Wiseco .120 piston for Yamaha Wave Runner Pro VXR 700 delivers a 84mm bore with a +3mm stroke offset and cross-references OEM part 790M08400.

Overview

This Wiseco .120 piston is built for the Yamaha Wave Runner Pro VXR 700 and provides a large oversize option for 1993-1994 models needing significant cylinder work. The .120 oversize piston for Yamaha Wave Runner Pro VXR 700 allows engine builders to restore worn cylinders to an 84mm bore, cross-referencing OEM 790M08400. This piston for Yamaha Wave Runner Pro VXR 700 suits rebuilders seeking a +3mm oversize solution for tired 700cc top ends.

Built For Performance

• Wiseco .120 oversize piston with 84mm bore diameter
• +3mm oversize over standard bore
• OEM cross-reference 790M08400 for fitment confirmation
• Designed for 1993-1994 Yamaha Wave Runner Pro VXR 700 engines
• Forged construction for high-rpm watercraft durability
• Restores compression after significant cylinder boring

Fits These Machines

• for Yamaha Wave Runner Pro VXR 700 1993
• for Yamaha Wave Runner Pro VXR 700 1994

On-The-Job Use

• Top-end rebuilds on 1993-1994 Yamaha Wave Runner Pro VXR 700 engines
• Cylinder boring and hone work requiring .120 oversize pistons
• Salvaging high-hour 700cc watercraft cylinders with significant wear
• Recreational and performance riding applications

Specs At A Glance

Good To Know

Q: Does this piston require cylinder boring? A: Yes, a .120 oversize piston requires the cylinder to be bored and honed to 84mm, which is a significant material removal from the original bore.

Q: Can I install just one piston? A: It is best to replace pistons as a set and verify cylinder wall thickness and ring end gap before assembly for even compression across cylinders.

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