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58.5mm 155cc Big Bore Kit for GY6 125cc 150cc Engine 152QMI 157QMJ Engine

4.3 (6) Write Review
Free shipping on orders over $29.99

$36.99

$ 18 .99 $18.99

In Stock
  • 58.5mm bore
  • Upgrade your engine from GY6 125cc and 150cc to 155cc
  • Widely used for GY6 125 and 150 engine upgrade
  • Fit for 152QMI 157QMJ and 1P57QMJ engine
  • Package come with cylinder head,piston,piston rings,stud,gasket


Fit for Taotao kazuma kymco roketa Sunl Jonway ATV and scooter


Indiana consumer
2025-08-04 17:16:15
Great big bore kit for the gy6 125/150cc engine, huge power gain if your moving from the 125 platform if jetted properly. I would definitely purchase again from this seller, nearly everything is from China anymore and this company is actually putting out a quality product.
Tommy Gun
2025-07-25 12:57:45
Relatively easy to install and gave the motor new life.
Alex V Golovach
2025-07-21 19:48:39
Was super fast delivery. Item is as described. Thank you
Andymar
2025-05-31 16:00:37
Made this thing faster, ease of install
jason everette
2025-02-09 17:55:04
Installed on trailmaster 150xrs. Runs great so far after 5 hours of abusive use of the throttle.
Rodnie S.
2025-01-20 18:05:21
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