647M05600 Wiseco .080 Piston Kit for Yamaha YZ125 1994-1996 56.00 mm

Wiseco .080 Piston Kit for Yamaha YZ125

This Wiseco .080 piston kit, part number 647M05600, is a 56.00 mm oversize piston assembly built to refresh the top end of a Yamaha YZ125.

Overview

This Wiseco piston kit for Yamaha YZ125 delivers a 56.00 mm oversize piston for top-end rebuilds on 1994-1996 models. Each kit includes the piston, rings, wrist pin, and circlips needed to complete the job. It is intended for riders and mechanics rebuilding a worn or damaged cylinder bore.

Built For Performance

• 56.00 mm oversize piston for a .080 in. overbore
• Forged aluminum construction for strength under high rpm
• Designed to match the standard YZ125 cylinder geometry
• Complete kit with piston, rings, wrist pin, and circlips
• Precision-machined ring grooves for consistent sealing
• Manufactured by Wiseco, a name known in powersports pistons

Fits These Machines

• for Yamaha YZ125 1994
• for Yamaha YZ125 1995
• for Yamaha YZ125 1996

On-The-Job Use

• Top-end rebuilds after a seized or scored piston
• Cylinder boring and honing jobs requiring an oversize piston
• Motocross and trail riding maintenance on YZ125 two-strokes
• Race engine refresh between seasons

Specs At A Glance

Good To Know

Q: Does this kit include rings and a wrist pin? A: Yes, the kit is supplied as a complete piston assembly with rings, wrist pin, and circlips. Confirm your bore size before ordering.

Q: Can I install this piston without boring the cylinder? A: An oversize piston requires the cylinder to be bored and honed to match. Have a machine shop verify 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.