This top end piston kit is designed for 1982-1984 Yamaha IT490 and YZ490 models and provides the core components required for a top end rebuild. The kit includes a forged piston with MOS2 break-in coating, cylinder head gasket, cylinder base gasket, intake gasket, exhaust pipe gasket and wrist pin bearing, supplied as a package kit rather than individual items.

Features

• Complete top end piston kit for listed Yamaha IT490 and YZ490 models
• Includes piston, cylinder head gasket, cylinder base gasket, intake gasket, exhaust pipe gasket and wrist pin bearing
• Suitable for top end rebuild work
• Kit pricing includes a 10% discount compared with purchasing individual items

Specifications

• VintCo Part Number: KTY53-1.0
• Oversize: 1.0 mm
• Piston size: 87.92 mm
• Clearance: 0.08 mm
• Nominal size: 88 mm
• Piston construction: Forged
• Piston coating: MOS2
• 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