845M05600 Wiseco Piston Kit .080 for Yamaha YZ125 YZ125X 2005-2022 56.00 mm

Wiseco .080 Piston Kit for Yamaha YZ125 & YZ125X

This Wiseco .080 overbore piston kit (845M05600, 56.00 mm) restores top-end compression for 2005-2022 Yamaha YZ125 and YZ125X machines.

Overview

This .080 overbore piston kit for Yamaha YZ125 and YZ125X models gives worn or scored top ends a fresh lease on life with a 56.00 mm forged piston and matched components. Built as a direct replacement for the 845M05600 part number, it suits riders and shops doing routine rebuilds on 2005-2022 machines. The kit keeps the YZ125 and YZ125X running crisp through the full rev range on trail or track.

Built For Performance

• Forged piston construction for strength under high-rpm loads
• .080 in overbore restores cylinder bore after wear or damage
• 56.00 mm piston diameter matched to 845M05600 specification
• Kit includes piston, rings, wrist pin and circlips for a complete top-end refresh
• Machined ring grooves for consistent sealing and compression
• Designed to run with a corresponding overbore cylinder machining

Fits These Machines

• for Yamaha YZ125 2005-2022
• for Yamaha YZ125X 2005-2022

On-The-Job Use

• Top-end rebuilds on worn YZ125 and YZ125X engines
• Motocross and off-road race preparation
• Trail riding maintenance schedules
• Shop-based engine restoration work

Specs At A Glance

Good To Know

Q: Does this kit come with rings and a wrist pin? A: Yes, Wiseco piston kits of this type typically include the piston, rings, wrist pin and circlips. Confirm the contents list before ordering.

Q: Will I need to machine my cylinder? A: A .080 overbore piston requires the cylinder to be bored and honed to match the 56.00 mm size. Check your bore measurement before installation.

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