435M05600 Wiseco Std Piston Kit for Yamaha YZ125 1976-1982 56.00 mm

Wiseco Std Piston Kit for Yamaha YZ125

This Wiseco standard piston kit for Yamaha YZ125 brings fresh top end performance to 1976 through 1982 models, and with the 435M05600 cross reference and 56.00 mm bore size, it gives riders a direct replacement option for worn pistons.

Overview

This Wiseco Std Piston Kit for Yamaha YZ125 provides a complete top end replacement for 1976-1982 models that need renewed compression and sealing. Built as a standard bore piston kit with a 56.00 mm diameter, it is made for riders doing routine rebuilds or restoring tired engines. The 435M05600 reference makes it easy to match the piston kit to the right YZ125 application.

Built For Performance

• Standard 56.00 mm bore size for direct replacement of the original piston
• Wiseco forged piston construction built to handle high-rpm two-stroke operation
• Kit includes piston, rings, wrist pin, and circlips for a complete top end refresh
• Designed for 1976-1982 Yamaha YZ125 engines
• 435M05600 part number for confident cross-referencing
• Precision machining supports consistent cylinder sealing and compression

Fits These Machines

• for Yamaha YZ125 1976
• for Yamaha YZ125 1977
• for Yamaha YZ125 1978
• for Yamaha YZ125 1979
• for Yamaha YZ125 1980
• for Yamaha YZ125 1981
• for Yamaha YZ125 1982

On-The-Job Use

• Top end rebuilds on vintage YZ125 motocross bikes
• Restoration projects for 1976-1982 Yamaha two-strokes
• Routine piston and ring replacement during engine service
• Reconditioning engines that have lost compression

Specs At A Glance

Good To Know

Q: What does a standard piston kit include? A: It typically includes the piston, rings, wrist pin, and circlips needed for a top end rebuild. Confirm the 56.00 mm bore matches your cylinder before ordering.

Q: How do I know if this piston kit fits my YZ125? A: This kit is listed for 1976-1982 Yamaha YZ125 models with a 56.00 mm standard bore. Check your engine size and serial number to confirm the correct fitment.

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