This VintCo top end piston kit is a complete rebuild set for 1977-1978 Yamaha YZ125 models, supplied in a 57.0 mm, +1.0 mm oversize configuration. It includes a piston kit with piston, rings, pin and clips, a wrist pin bearing, and a full top-end gasket set with head, base, intake and exhaust gaskets. Components are manufactured using modern materials and production methods to provide OEM-equivalent or better fit and performance.

Features

• Complete top end rebuild kit for Yamaha YZ125 models
• Includes piston, rings, pin and clips
• Includes wrist pin bearing
• Includes full top-end gasket set
• Includes head gasket, base gasket, intake gasket and two exhaust gaskets
• Intended to help complete rebuild work more easily and cost effectively
• Kit price includes a 10% saving compared with purchasing the components individually
• More size options are available

Specifications

• VintCo Part Number: KTY02-1.0
• Product type: Top End Piston Kit
• Bore size: 57.0 mm
• Oversize: +1.0 mm
• Piston diameter: 56.94 mm
• Piston clearance: 0.06 mm
• Piston construction: Forged
• Piston coating: MoS2 coated for break-in
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Reference number: 2K6-11111-00-00
• Piston: 2K7-11638-01-00
• Head gasket: 2A6-11181-00-00
• Base gasket: 18G-11351-02-00
• Intake gasket: 3TT-13621-00-00
• Exhaust gasket: 3PA-14613-10-00
• Exhaust gasket: 248-14623-10-00
• Wrist pin bearing: 93310-216L2-00

Vehicle Fitments

• 1977 Yamaha YZ125
• 1978 Yamaha YZ125