629M05600 Wiseco Std Piston Kit for Yamaha YZ125 1993 56.00 mm

Wiseco Std Piston Kit for Yamaha YZ125

This Wiseco standard piston kit, cross-referenced as 629M05600 at 56.00 mm, refreshes the top end of a Yamaha YZ125 at the original bore size for restored compression and sealing.

Overview

This Wiseco piston kit for Yamaha YZ125 is a standard-bore top-end component sized at 56.00 mm. It replaces a worn or scored piston to bring compression and cylinder sealing back to spec. Riders and rebuilders selecting the Wiseco standard piston kit for Yamaha YZ125 get a matched piston for a cylinder still at its original bore.

Built For Performance

• Forged piston construction for strength under two-stroke racing loads
• Standard bore size of 56.00 mm for stock cylinders
• Includes piston kit components matched to the 629M05600 reference
• Sized specifically for the Yamaha YZ125 top end
• Designed to restore compression after piston and ring wear

Fits These Machines

• for Yamaha YZ125 1993

On-The-Job Use

• Top-end rebuilds after a piston seizure or worn rings
• Standard-bore piston service on a YZ125 engine
• Race and practice bike maintenance between rebuild intervals
• Restoring compression on a rebuild project

Specs At A Glance

Good To Know

Q: Does this kit require cylinder boring? A: No, the standard 56.00 mm size suits a cylinder still at its original bore. Measure your bore and clearance before ordering to confirm the piston will fit.

Q: What else should be replaced during a top-end rebuild? A: Gaskets, wrist pin bearing, and circlips are commonly replaced alongside the piston kit. Check your service manual for the full list of top-end parts.

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