PISTON KIT 74-75 YAMAHA YZ 250 71.0mm +1.0mm OVER VINTCO PSY34-1.0
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VintCo Piston Kit PSY34-1.0 is a forged replacement piston assembly for vintage 2-stroke engines. It features a 71.0 mm size with a +1.0 mm oversize, measuring 70.94 mm with 0.06 mm clearance. The MoS2 coated piston is made in Germany using modern materials and manufacturing techniques for OEM-style fitment and performance. This complete kit includes the piston, rings, pin, and clips; the wrist pin bearing is sold separately. The supplied rings are intended for Nikasil-plated or iron-lined cylinders and are not compatible with the original chrome-plated Yamaha cylinder on 1974-1975 YZ250 models. Additional size options are available.
- SKU
- VIN-PSY34-1.0
- Brand
- Vintco
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 250 | 1974 |
| YAMAHA | YZ 250 | 1975 |
- SKU
- VIN-PSY34-1.0
- Brand
- Vintco
- Availability
- In Stock (1)
FULL DESCRIPTION
VintCo Piston Kit 71.0mm +1.0mm Oversize for Vintage Yamaha YZ250
This VintCo piston kit is designed as a high-quality replacement for vintage 2-stroke engines. Engineered in Germany, this kit utilizes modern materials and manufacturing techniques to ensure OEM-style fitment and performance.
Key Features:
- Complete piston assembly including piston, rings, pin, and clips.
- Piston measures 70.94mm with a +1.0mm oversize specification.
- Features a forged piston construction for enhanced durability.
- Includes MoS2 coating for effective break-in.
- The supplied rings are designed for use with Nikasil-plated or iron-lined cylinders.
- Please Note: The included rings are not compatible with the original chrome-plated cylinders found on 1974-1975 Yamaha YZ250 models.
- Wrist pin bearing is sold separately.
- Additional oversize options are available to suit various engine needs.
Specifications:
- Piston Size: 71.0 mm
- Oversize: +1.0 mm
- Clearance: 0.06 mm
- Country of Manufacture: Germany
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