PISTON KIT 76-81 YAMAHA MX YZ 125 57.0mm 1.0mm OVER VINTCO PSY01-1.0

This VintCo piston kit is designed for 1976–1981 Yamaha YZ125 models and the 1976 Yamaha MX125. It includes a 57.0 mm forged piston in +1.0 mm oversize, along with rings, pin and clips, for vintage 2-stroke engine service and rebuild work. The piston is manufactured in Germany, uses modern manufacturing methods for OEM-style fitment, and has a MoS2 coating for running-in. A wrist pin bearing is available separately, and additional size options are also available.

Features

• Designed for vintage 2-stroke Yamaha applications
• Piston kit includes piston, rings, pin and clips
• Wrist pin bearing sold separately
• OEM-style fitment
• MoS2 coating supports running-in
• Additional size options available

Specifications

• VintCo Part Number: PSY01-1.0
• Item Category: Piston Kits
• Piston diameter: 57.0 mm
• Oversize: +1.0 mm
• Piston size: 56.94 mm
• Clearance: 0.06 mm
• Construction: Forged piston
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• 537-11638-02-00
• 2K6-11638-00-00
• 3R3-11638-00-00
• 3N8-11638-10-00

Vehicle Fitments

• 1976 Yamaha YZ125
• 1976 Yamaha MX125
• 1977 Yamaha YZ125
• 1978 Yamaha YZ125
• 1979 Yamaha YZ125
• 1980 Yamaha YZ125
• 1981 Yamaha YZ125