PISTON KIT 80-81 YAMAHA IT YZ 250 70.5mm 0.5mm OVER VINTCO PSY09-0.5

This VintCo piston kit is a replacement assembly for Yamaha YZ250 1980-1981 and IT250 1981 models, intended for vintage 2-stroke engine rebuilds. Manufactured using modern materials and production methods, it is designed to provide OEM-equivalent fitment and performance. The kit includes the piston, rings, pin and clips, with a wrist pin bearing available separately, and is supplied in a 70.5 mm size with +0.5 mm oversize.

Features

• Complete piston kit with piston, rings, pin and clips
• Suitable for vintage Yamaha 2-stroke engine rebuilds
• Designed for OEM-equivalent fitment and performance
• Wrist pin bearing sold separately
• Supports running-in
• Additional size options are available

Specifications

• VintCo Part Number: PSY09-0.5
• Piston diameter: 70.5 mm
• Oversize: +0.5 mm
• Piston measurement: 70.44 mm
• Clearance: 0.06 mm
• Construction: Forged piston
• Coating: MOS2
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• 3R4-11636-00-00

Vehicle Fitments

• 1980 Yamaha YZ250
• 1981 Yamaha YZ250
• 1981 Yamaha IT250