This top end piston kit is designed for 1982-1984 Yamaha IT490 and YZ490 models and is supplied as a complete top end service set. The kit includes a forged piston, cylinder head gasket, cylinder base gasket, intake gasket, exhaust pipe gasket and wrist pin bearing, and is priced at 10% less than the included items purchased individually. It is intended for 0.5 mm oversize applications.

Features

• Complete top end piston kit
• Includes forged piston
• MOS2-coated piston for break-in
• Includes cylinder head gasket
• Includes cylinder base gasket
• Includes intake gasket
• Includes exhaust pipe gasket
• Includes wrist pin bearing
• Kit pricing includes a 10% discount compared with individual items

Specifications

• VintCo Part Number: KTY53-0.5
• Nominal piston size: 87.5 mm
• Oversize: 0.5 mm
• Piston diameter: 87.42 mm
• Piston clearance: 0.08 mm
• Piston country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Cylinder Head Gasket: 5X6-11181-00-00
• Cylinder Base Gasket: 40T-11351-01-00
• Intake Gasket: 80L-013621-01-00
• Exhaust Pipe Gasket: 3R4-14613-00-00

Vehicle Fitments

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