VintCo top end piston kit KTY31-00 is a complete rebuild kit for the 1991 Yamaha YZ125, supplied with a piston, rings, pin, clips, a wrist pin bearing and a full top-end gasket set. It is intended to simplify top-end servicing with components manufactured for OEM-equivalent fit and performance, and the kit is stated to offer a 10% saving compared with purchasing the parts individually.

Features

• Complete top-end rebuild kit
• Includes piston, rings, pin and clips
• Includes wrist pin bearing
• Includes two head gaskets
• Includes base gasket
• Includes intake gasket
• Includes two exhaust pipe gaskets
• Includes O-ring
• Includes holder gasket
• Includes power valve gasket
• Coating intended to assist break-in
• Designed for OEM-equivalent fit and performance
• Supplied as a kit with a stated 10% saving over individual items

Specifications

• VintCo Part Number: KTY31-00
• Product type: Top End Piston Kit
• Application size: 56.02 mm standard
• Piston size: 55.96 mm standard
• Clearance: 0.06 mm
• Piston construction: Forged
• Country of manufacture: Germany
• Coating: MOS2

Cross-Reference OEM Part Numbers

• Head Gasket: 93211-07720-00
• Head Gasket: 93210-65721-00
• Base Gasket: 1LX-11351-10-00
• Intake Gasket: 2K7-13621-10-00
• Exhaust Pipe Gasket: 3R3-14613-00-00
• Exhaust Pipe Gasket: 93210-45742-00
• O-Ring: 93210-270A8-00
• Holder Gasket: 5X4-1131N-10-00
• Power Valve Gasket: 3JD-11993-10-00

Vehicle Fitments

• 1991 Yamaha YZ125