VintCo piston kit PSY20-0.5 is a replacement forged piston kit for vintage Yamaha IT490 and YZ490 2-stroke models from 1982 to 1984. It is supplied as an 87.5 mm piston in +0.5 mm oversize and includes the piston, rings, pin and clips. Manufactured in Germany using modern materials and manufacturing techniques, it is intended to provide OEM-equivalent fitment and performance, with a MoS2 coating to assist initial running-in.

Features

• Complete piston kit with piston, rings, pin and clips
• Suitable for vintage 2-stroke engine rebuilds
• Intended to provide OEM-equivalent fitment and performance
• MoS2 coating to assist initial running-in
• Wrist pin bearing sold separately
• Other size options are available
• Made using modern materials and manufacturing techniques

Specifications

• VintCo Part Number: PSY20-0.5
• Piston size: 87.5 mm
• Oversize: +0.5 mm
• Piston measurement: 87.42 mm
• Clearance: 0.08 mm
• Construction: Forged
• Country of manufacture: Germany

Vehicle Fitments

• 1982 Yamaha YZ490
• 1983 Yamaha IT490
• 1983 Yamaha YZ490
• 1984 Yamaha IT490