This 66.00 mm standard piston kit is designed for Yamaha 175 cc two-stroke applications, primarily intended for K-series models. Manufactured to precise standards for reliable rebuilds, it is a direct OEM replacement and includes key dimensional data and pin size to support accurate identification before purchase.

Features

• High-grade materials for dependable service and consistent performance


• Manufactured to exacting tolerances to support confident engine rebuilds


• Meets or exceeds OEM quality


• Direct OEM replacement


• Check images before ordering to confirm compatibility


• Cost-effective replacement component


• Straightforward installation; if unsure, use a professional


• Mainly for the K models

Specifications

• Bore diameter: 66.00 mm (standard)


• Piston length: 68.9 mm


• Crown edge to bottom skirt edge: 65 mm


• Centre of pin to crown edge: 35.5 mm


• Gudgeon pin size: 16 × 57 mm

Cross-Reference OEM Part Numbers

• 2N5-11631-00


• 2N5-11631-00-96


• 2A7-11631-00-98


• 443-11631-03-98

Vehicle Fitments

Yamaha:

• 175DT (1979–1981)