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GOOFIT 39mm Bore Cylinder Rebuild Kit Replacement for 4 Stroke GY6 49cc 50cc ATV Scooter

  • Based on 46 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Nov 17
Order within 16 hours and 42 minutes
Available payment plans shown during checkout

Features

  • 39mm bore cylinder piston kit
  • Fit for GY6 4 stroke 50cc 139qmb engine(read description for detailed fitment infos)
  • Package including: cylinder head,piston, piston ring,gaskets,clips,piston stud

Manufacturer: ‎GOOFIT


Brand: ‎GOOFIT


Item Weight: ‎2.23 pounds


Package Dimensions: ‎5.91 x 4.96 x 4.57 inches


Item model number: ‎K074-061


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎K074-061


Date First Available: October 7, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Jug
Still haven't heard it run yet
Reviewed in the United States on October 14, 2023 by gregory w johnson

  • Rebuild kit
Worked well ....wanted to go back to stock bore for engine to last a little longer..
Reviewed in the United States on May 27, 2023 by Ben

  • 4
Shipped fast, fit as expected.
Reviewed in the United States on August 9, 2018 by Robert Sapone Sr

  • How to properly install
It fit perfectly but I had to guess at installation there should be instructions with it especially rings
Reviewed in the United States on December 28, 2018 by Amazon Customer

  • Out of all the kits i bought this one wasnt that good
10 mins after install i heard a loud pop behind me,removed the head only to find this travesty. Everything was to specs even had a mechanic double check.
Reviewed in the United States on July 21, 2022 by kairio z. kairio z.

  • As seen in picture
As seen in picture
Reviewed in the United States on July 22, 2018 by JJTLAC MOM

  • Five Stars
Worked great excellent product
Reviewed in the United States on June 14, 2018 by address

  • It worked
Overall good carburetor.
Reviewed in the United States on July 11, 2018 by Carli

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