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GY6 125cc/150cc Engine Upgrade to 180cc with Cylinder Head Valves and Rebuilt Kit, 61mm Big Bore kits with Piston and Ring Assy for 152QMI 157QMJ Engine Chinese Scooter Moped ATV Go Kart Quad

4.5 (8) Write Review
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$59.97

$ 30 .99 $30.99

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  • 【Noted】It is upgrade cylinder kits, the outer size of the cylinder is 63.8mm, the normal gy6 engine 125/150cc cylinder outer size is 61mm, you have to bore out the crank case for this to fit on most bikes with machine shop work
  • 【Cylinder Bore】:Upgrade from 57.4mm to 61mm, outer size: 63.8mm Cylinder kits with more power,
  • 【Full sets of parts】: Complete parts is suitable for motorcycle maintenance shop, motorcycle parts supermarket and personal use with nice price.
  • 【Apply to】: GY6 4 stroke 125cc/150cc engine for most of chinese scooter, atv and go karts
  • 【Parts included】:GY6 180cc Cylinder Head Comp with valves, 61mm Bore Cylinder Block, Set of 61mm Piston Assy, Piston, Rings and Wrist Pin, Gaskets.


【Noted】It is upgrade cylinder kits, the outer size of the cylinder is 63.8mm, the normal gy6 engine 125/150cc cylinder outer size is 61mm, you have to bore out the crank case for this to fit on most bikes with machine shop work


Ravyn O.
Reviewed in the United States on March 8, 2024
Baught this kit to hopefully refresh and upgrade my 2009 scooters tiered engine...well first order the rings must be for the stock size piston and cylinder as they were way to small won't even hold themselves up in the cylinder to check gap...tried to find a way to contact seller but to no avail so I opted for a replacement....would you guess got the exact same rings again...completely useless....
Gavin Borkowski
Reviewed in the United States on October 11, 2024
Did what it was supposed to
Greg2u
Reviewed in the United States on May 6, 2023
I have bought this product a few times and its not bad for the money.I am not sure what the review from christopher was all about its a over head valve engine what push rods are you talking about??????
Trinity
Reviewed in the United States on February 4, 2023
I have a 168cc so I would recommend a 58.4mm bore for drop in.
Nolan McCormack
Reviewed in the United States on April 21, 2023
It came used and broke
Derek
Reviewed in the United States on September 9, 2022
I purchased this kit and it didnt fit as my casing would have to be bored out to fit the cylinder. I contacted the seller and discussed the issue with them they responded fast and they had another option that would fit they got it sent out right away and i had recieved my original package and the follow up package all in a little over a week total they were great and fast. If you have a 150cc there is a chance this will fit without boring the casing there is a video rolling wrench makes on youtube I found after the fact that shows the model# for the motors that 61mm fit without boring but not all will fit hope you have better luck than me on that end but again as far as the customer service they are getting a 5 star for the new product they sent me and how fast and helpful they were at getting the issue resolved. will definitely buy more products from them in the future for projects. Thank you,
Christopher
Reviewed in the United States on May 2, 2021
After having to bore the case to get it to fit one of the push rods broke after two days off the engine running...
Sean Rice
Reviewed in the United States on April 11, 2021
This didn't fit our scooter and would have required it to be bored out.