2Bros Parts

PISTON KIT 76-78 YAMAHA YZ IT 400 85.0mm STANDARD VINTCO PSY04-00

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VintCo PSY04-00 is a standard-bore piston kit for vintage 2-stroke applications. This complete kit includes the piston, rings, pin, and clips. It is designed for a standard bore size of 85.0 mm with a piston size of 84.92 mm and a clearance of 0.08 mm. The forged piston features an MoS2 coating for running-in. Manufactured in Germany, it offers OEM-equivalent fitment and performance. A wrist pin bearing is available separately. VintCo Part Number: PSY04-00. Yamaha OEM Part Number cross-reference: 2K8-11631-00-96.

Specifications
SKU
VIN-PSY04-00
Brand
Vintco
Availability
In Stock (1)

Fitments (4)

MakeModelYear
YAMAHAIT 4001976
YAMAHAYZ 4001976
YAMAHAYZ 4001977
YAMAHAYZ 4001978
SKU
VIN-PSY04-00
Brand
Vintco
Availability
In Stock (1)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

VintCo Standard Bore Piston Kit for Yamaha YZ/IT 400

Revitalize your vintage 2-stroke motorcycle with the VintCo PSY04-00 Standard Bore Piston Kit. This comprehensive kit is designed for 1976-1978 Yamaha YZ400 and 1976 Yamaha IT400 models, providing an OEM-equivalent fit and performance. Manufactured using modern materials and advanced production techniques, this piston kit ensures durability and reliability for your classic machine.

Key Features:

  • Complete Kit: Includes piston, piston rings, wrist pin, and clips for a straightforward installation.
  • Vintage Application: Specifically designed for vintage 2-stroke engine rebuilds.
  • MoS2 Coating: Features a Molybdenum Disulfide (MoS2) coating for enhanced break-in performance and reduced friction.
  • Forged Piston: Constructed from forged aluminum for superior strength and longevity.
  • Made in Germany: Precision engineered and manufactured in Germany for exceptional quality.
  • OEM Equivalent: Aims to match original equipment manufacturer specifications for a precise fit.

Specifications:

  • Standard Bore Size: 85.0 mm
  • Piston Diameter: 84.92 mm
  • Piston Clearance: 0.08 mm
  • VintCo Part Number: PSY04-00

Note: A wrist pin bearing is available separately.

Before you buy

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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.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

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