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62.5mm Bore Cylinder Head Valves Piston kit fit for GY6 177cc 1P63QML 4 Stroke Engine Chinese ATV Quad 4 Wheeler Go Kart Scooter

  • Based on 64 reviews
Condition: New
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Availability: 12 left in stock
Fulfilled by Amazon

Arrives Sep 30 – Oct 22
Order within 6 hours and 52 minutes
Available payment plans shown during checkout

Size: 62.5mm Big Bore Cylinder


Features

  • 62.5mm Cylinder Head kit fit for GY6 177cc 1P63QML 4 Stroke Engine Chinese ATV Quad 4 Wheeler Go Kart Scooter
  • Package include:1*Cylinder Head, 1*Piston kit,Gaskets(As picture)
  • The measurement of the actual items may slightly different from the listing images due to manual measurement,please allow 0.5-1mm error.
  • High quality replacement parts.Easy To Install and Convenient To Use.
  • Safe transportation with reliable package, deserving your trust.

Manufacturer: ‎GOIRTUTSS


Brand: ‎GOIRTUTSS


Model: ‎1


Item Weight: ‎2.86 pounds


Package Dimensions: ‎7.8 x 5.83 x 4.29 inches


Country of Origin: ‎China


Item model number: ‎AMJX-MB2380


Exterior: ‎Machined


Manufacturer Part Number: ‎AMJX-MB2380


Date First Available: April 6, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 30 – Oct 22

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.

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Top Amazon Reviews


  • Fit 110 Apollo RFZ. Happy with it
Size: 52.4mm Cylinder Head
Fit the 110cc Apollo RFZ dirt bike like a glove. No issues. Included the gaskets it needed. Good purchase overall
Reviewed in the United States on May 4, 2025 by Zach M.

  • False advertisement
Size: 69MM
Don't buy this is false information this is not a big bore kit this is a stock kit with other stuff mixed in one of the gaskets doesn't even go to qmb139 waist of money just stock kit
Reviewed in the United States on April 10, 2025 by Normand V.

  • Top end rebuild
Size: 52.4mm Cylinder Head
It truly came with everything you need to make it simple from getting it in just two days I always appreciate how fast stuff gets delivered and the customer service and the quality and prices are awesome it fit right on my 110cc and runs great
Reviewed in the United States on October 8, 2024 by Paul

Size: 57.4MM
All parts fit but failed shortly after
Reviewed in the United States on April 24, 2025 by javier

  • Price
Size: 52.4mm Cylinder Head
Everything fit good
Reviewed in the United States on February 1, 2025 by Amazon Customer

  • IS NOT A BIG BORE KIT OF ANY SORT!!! False title/description.
Size: 62.5mm Big Bore Cylinder
This is a stock cylinder for a 1P63QML so three stars just cause they are kinda hard to find. This IS NOT a big bore kit of any sort and is a stock 62.5mm cylinder for a very specific 177cc gy6. It IS NOT a gy6 B or B-block cylinder and is not a gy6b/ B-block 57x57mm stud spacing' its 55mmx60mm spacing. It IS NOT 170cc or 180cc or 200cc. ... show more
Reviewed in the United States on July 23, 2023 by Jon Pippen

  • Alittle too big for a 125cc vertical engine.
Size: 62.5mm Big Bore Cylinder
Slightly too big for my vertical 125cc venom x22,so im going to try a 57.4mm bore to make it a 140cc.
Reviewed in the United States on May 2, 2024 by Michael

  • Not that great
Size: 62.5mm Big Bore Cylinder
Metal head gasket has a 90 degree bend which renders the kit useless. only had 1 wrist pin clip Everything else appears fine.
Reviewed in the United States on May 12, 2025 by Tammy

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