757M08400 Wiseco Std Piston Kit 84.00 mm for Yamaha Wave Runner 1200 1997-1999

Wiseco Std Piston Kit for Yamaha Wave Runner 1200

This Wiseco Std Piston Kit (757M08400, 84.00 mm) provides standard-bore pistons and rings for rebuilding the top end of a 1200cc Yamaha Wave Runner engine.

Overview

This Wiseco Std Piston Kit is a standard-bore rebuild set made for Yamaha Wave Runner 1200 personal watercraft engines. Each piston in this Wiseco Std Piston Kit measures 84.00 mm and is intended to restore factory bore dimensions during a top-end rebuild. It suits riders and shops rebuilding a worn or seized 1200cc powerplant back to stock spec.

Built For Performance

• Forged piston construction for strength under sustained high-RPM marine use
• Standard 84.00 mm bore size matching the factory cylinder dimension
• Kit includes piston, ring set, wrist pin, and circlips
• Machine-finished ring grooves for consistent ring seal
• Heat-treated alloy suited to two-stroke watercraft combustion temperatures

Fits These Machines

• for Yamaha Wave Runner 1200, 1997-1999

On-The-Job Use

• Top-end rebuild after a piston seizure or low compression reading
• Routine freshening of a high-hour 1200cc Wave Runner engine
• Shop rebuilds where factory bore size is retained
• Restoring stock compression before a new riding season

Specs At A Glance

Good To Know

Q: Is this piston kit sized for a stock cylinder? A: Yes, the 84.00 mm bore is the standard dimension, so it is intended for an unrebored factory cylinder. Measure your bore and piston clearance before assembly.

Q: Does the kit include rings and a wrist pin? A: A complete piston kit of this type normally ships with the piston, ring set, wrist pin, and circlips. Confirm the contents shown in the listing before ordering.

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