790M08100 Wiseco Std Piston Kit 81.00 mm for Yamaha FX-1 700 1994-1995

Wiseco Std Piston Kit for Yamaha FX-1 700

This Wiseco Std Piston Kit (790M08100, 81.00 mm) supplies standard-bore pistons and rings for rebuilding the top end of a Yamaha FX-1 700 engine.

Overview

This Wiseco Std Piston Kit is a standard-bore rebuild set made for Yamaha FX-1 700 personal watercraft engines. Each piston in this Wiseco Std Piston Kit measures 81.00 mm, matching the factory cylinder bore for a stock rebuild. It suits riders and shops bringing a worn or seized 700cc powerplant back to original spec.

Built For Performance

• Forged piston construction for strength under sustained high-RPM marine use
• Standard 81.00 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 FX-1 700, 1994-1995

On-The-Job Use

• Top-end rebuild after a piston seizure or low compression reading
• Routine freshening of a high-hour 700cc FX-1 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 81.00 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.