PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
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VintCo PSY34-1.5 is a complete piston kit for vintage 2-stroke engine rebuilds. It is supplied in a 71.5mm bore size with a +1.5mm oversize, featuring a 71.44mm piston with 0.06mm clearance. The kit includes the piston, rings, pin, and clips, manufactured in Germany using modern materials and techniques. The piston is forged and finished with a MoS2 coating for initial running-in. Wrist pin bearing is sold separately. Rings are compatible only with Nikasil plating or an iron liner and will not work with the original chrome-plated Yamaha cylinder.
- SKU
- VIN-PSY34-1.5
- Brand
- Vintco
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 250 | 1974 |
| YAMAHA | YZ 250 | 1975 |
- SKU
- VIN-PSY34-1.5
- Brand
- Vintco
- Availability
- In Stock (1)
FULL DESCRIPTION
VintCo Piston Kit for Vintage Yamaha YZ250
This VintCo piston kit is designed for vintage 2-stroke engine rebuilds. It provides a 71.5mm bore size with a +1.5mm oversize, ensuring a precise fit and reliable performance for your motorcycle.
Key Features:
- Complete piston kit includes piston, rings, pin, and clips for a comprehensive engine rebuild.
- Manufactured using modern materials and techniques for fit and performance comparable to OEM specifications.
- Features a forged piston for enhanced durability and strength.
- MoS2 coating on the piston aids in initial running-in, promoting proper lubrication and reducing wear.
- Wrist pin bearing is sold separately, allowing for customization of your rebuild.
- Additional piston sizes are available to accommodate various engine requirements.
- Important Note on Rings: The included rings are designed for Nikasil plating or iron liner cylinders and will not function with original chrome-plated Yamaha cylinders.
Specifications:
- Bore Size: 71.5mm
- Oversize: +1.5mm
- Piston Size: 71.44mm
- Clearance: 0.06mm
- Country of Manufacture: Germany
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
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