PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
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VintCo piston kit for 1974-1975 Yamaha YZ250 models. This kit is a 70.5 mm piston in +0.5 mm oversize for vintage 2-stroke engine rebuilds. It uses modern materials and manufacturing methods for OEM-level fitment and performance. Includes piston, rings, pin, and clips. Forged piston with MoS2 coating for break-in. Wrist pin bearing sold separately. Rings are compatible with Nikasil plating or an iron liner only. Made in Germany. Piston size: 70.5 mm. Oversize: +0.5 mm. Piston measurement: 70.44 mm. Clearance: 0.06 mm. VintCo Part Number: PSY34-0.5.
- SKU
- VIN-PSY34-0.5
- Brand
- Vintco
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 250 | 1974 |
| YAMAHA | YZ 250 | 1975 |
- SKU
- VIN-PSY34-0.5
- Brand
- Vintco
- Availability
- In Stock (1)
FULL DESCRIPTION
VintCo Piston Kit 70.5mm +0.5mm Oversize for Vintage Yamaha YZ250
Revitalize your vintage 2-stroke engine with this premium VintCo piston kit, engineered for 1974-1975 Yamaha YZ250 models. Crafted using modern manufacturing techniques and materials, this kit ensures OEM-level fitment and performance for your classic motorcycle rebuild. Each kit includes a high-quality piston, rings, wrist pin, and clips, providing a comprehensive solution for your engine's needs.
Key Features:
- Complete piston kit for a straightforward engine rebuild, including piston, rings, pin, and clips.
- Specifically designed for 1974-1975 Yamaha YZ250 motorcycles, perfect for vintage applications.
- Features a forged piston for enhanced durability and strength.
- Equipped with an MoS2 coating on the piston skirt to aid in the break-in process.
- Please note: Wrist pin bearing is sold separately.
- Important compatibility information: The included rings are designed for use with Nikasil plating or an iron liner only. They are not compatible with the original chrome-plated Yamaha cylinder found on 1974-1975 YZ250 models.
- Manufactured in Germany to exacting standards.
Specifications:
- Piston Size: 70.5 mm
- Oversize: +0.5 mm
- Actual Piston Measurement: 70.44 mm
- Recommended Piston Clearance: 0.06 mm
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