VintCo top end piston kit KTY04-00 is a complete standard-bore rebuild kit for the 1979 Yamaha YZ125. It includes a forged 56.0 mm piston with rings, pin and clips, a wrist pin bearing, and a full top-end gasket set comprising the head, base, intake and exhaust gaskets. Manufactured using modern materials and production methods, it is intended to provide OEM-comparable fitment and performance while simplifying rebuild work and reducing cost versus purchasing the components separately.

Features

• Complete top end rebuild kit for the 1979 Yamaha YZ125
• Includes VintCo piston kit with piston, rings, pin and clips
• Includes wrist pin bearing
• Includes full top-end gasket kit
• Gasket kit includes head gasket, base gasket, intake gasket and exhaust gasket
• Supplied as a matched kit for easier, more cost-effective rebuilds
• Provides a 10% saving compared with buying the parts individually
• Manufactured for OEM-comparable fitment and performance
• Additional size options are available

Specifications

• VintCo Part Number: KTY04-00
• Product type: Top End Piston Kit
• Bore size: 56.0 mm
• Bore designation: Standard
• Piston diameter: 55.94 mm
• Piston clearance: 0.06 mm
• Piston construction: Forged
• Country of manufacture: Germany
• Piston coating: MoS2

Cross-Reference OEM Part Numbers

• Top end piston kit: 2K6-11111-00-00
• Piston: 537-11631-02-96
• Head gasket: 2A6-11181-00-00
• Base gasket: 18G-11351-02-00
• Intake gasket: 3TT-13621-00-00
• Wrist pin bearing: 93310-216L2-00

Vehicle Fitments

• 1979 Yamaha YZ125