2Bros Parts

PISTON KIT 76-81 YAMAHA MX YZ 125 56.5mm 0.5mm OVER VINTCO PSY01-0.5

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VintCo Piston Kit 56.5mm 0.5mm Over. This kit for vintage 2-stroke engines includes piston, rings, pin, and clips. Wrist pin bearing sold separately. Bore size 56.5 mm, Oversize +0.5 mm, Piston diameter 56.44 mm, Recommended clearance 0.06 mm. Piston construction is forged with MoS2 coating. Manufactured in Germany. VintCo Part Number PSY01-0.5. Cross-Reference OEM Part Numbers: 537-11636-02-00, 2K6-11636-00-00, 3R3-11636-00-00, 3N8-11636-00-00.

Specifications
SKU
VIN-PSY01-0.5
Brand
Vintco
Availability
In Stock (1)

Fitments (7)

MakeModelYear
YAMAHAMX 1251976
YAMAHAYZ 1251976
YAMAHAYZ 1251977
YAMAHAYZ 1251978
YAMAHAYZ 1251979
YAMAHAYZ 1251980
YAMAHAYZ 1251981
SKU
VIN-PSY01-0.5
Brand
Vintco
Availability
In Stock (1)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

VintCo Piston Kit - 56.5mm +0.5mm Oversize for Vintage Yamaha MX/YZ 125

This VintCo piston kit is a high-quality replacement assembly designed for 1976-1981 Yamaha MX125 and YZ125 vintage 2-stroke engines. Engineered for performance and durability, this kit provides the essential components needed to restore your engine's power and reliability. The MoS2 coating enhances lubrication and reduces friction, contributing to a longer piston life. Manufactured in Germany, this forged piston ensures superior strength and performance.

Key Features:

  • Direct replacement piston kit for vintage Yamaha 2-stroke MX and YZ 125 models.
  • Includes a forged piston, piston rings, wrist pin, and retaining clips.
  • Features a MoS2 coating for improved lubrication and reduced wear.
  • Precisely machined to a 56.5mm bore size with a +0.5mm oversize.
  • Designed for optimal performance and longevity in demanding vintage applications.
  • Wrist pin bearing is sold separately.

Specifications:

  • Oversize: +0.5 mm
  • Bore Size: 56.5 mm
  • Piston Diameter: 56.44 mm
  • Recommended Clearance: 0.06 mm
  • Piston Construction: Forged
  • Coating: MoS2
  • Country of Manufacture: Germany

Included Components:

  • Piston
  • Piston Rings
  • Wrist Pin
  • Retaining Clips

Cross-Reference OEM Part Numbers:

  • 537-11636-02-00
  • 2K6-11636-00-00
  • 3R3-11636-00-00
  • 3N8-11636-00-00
Before you buy

QUESTIONS? JUST ASK

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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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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

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