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$69.99
- 1.Please note this kit is only used for GY6 139QMB 4-Stroke Engine.
- 2.Inner Diameter of Cylinder: 50mm
- 3.Outer Diameter of Piston Pin: 13mm
- 4.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut
- 5. High Performance Upgrade 50mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine
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$79.99
- COMPATIBILITY: Designed for GY6 125cc engines commonly found in ATVs, mopeds, and go-karts with 152QMI and 157QMJ engine types
- CYLINDER SPECS: Features a 52.4mm bore diameter cylinder block with precision-engineered cooling fins for optimal heat dissipation
- COMPLETE KIT: Includes cylinder, piston, piston rings, pin, and all necessary gaskets for a full top-end rebuild
- CONSTRUCTION: Made from high-grade aluminum alloy cylinder with chrome-plated bore for enhanced durability and performance
- PISTON ASSEMBLY: Comes with matched piston rings and circlips, ensuring proper compression and reliable engine operation
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促销中

$79.99 原价为:$79.99。$59.99当前价格为:$59.99。
- Specification:52.4mm/2.06″;bolt hole spacing:48mm x 50mm,piston diameter:52mm/2.05″;piston pin od:13mm/0.51″.
- Replacement for: taotao 110||ssr 110||kazuma falcon 110||panda 100||lacoste 110||coyote 110||redcat 110||roketa 110||bms 110||sunl 110||coolster 110. most chinese made 4 stroke 110cc engines atvs,go karts,dirt bikes.
- Cylinders and pistons are made of high-quality materials with good heat dissipation and anti-wear characteristics, capable of maintaining stable performance under intensive use. all parts are precision machined to ensure dimensional accuracy and surface finish, prolonging service life and reducing failure rate.
- The large bore design significantly improves the acceleration performance of the engine, making the vehicle swifter when starting and accelerating, which is suitable for high speed driving and off-road driving. the optimized piston design makes the engine more responsive and the throttle control more precise, which enhances driving pleasure.
- Each component in the kit is optimized for a quick and easy installation process that users can do themselves, saving time and cost.
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$59.99
- Inner diameter of cylinder:57.4mm/22.6″,hole spacing:54mm/2.12″,outer diameter of piston pin:15mm/5.9″(as the picture shows)
- Replacement for 4 stroke gy6 150cc 152qmi 157qmj engine,157qmj engines with the egr head,76mm bolt pattern 2 1/2″ tall head.
- Made of high-strength material,fast heat dissipation,anti-wear,long-term high-load operation is not easy to deform,high-temperature and high-pressure resistance,reduce friction loss,effectively reduce the risk of oil burning.
- Precision machining of the cylinder wall and piston clearance,reduce gas leakage speed faster,optimize the combustion chamber design,reduce fuel consumption.
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$59.99
- 39mm bore cylinder piston kit(Please Be Carefully Check The Goods Appearance,Size,Shape Before Ordering).
- 39mm Bore Cylinder Rebuild Kit Replacement for 4 Stroke GY6 49cc 50cc ATV Scooter.
- Preferred Material,Fine Manufacture,Corrosion Resistance,Wear Resistance,Strong And Durable,Shell Thickened More Durable.
- Strong Power,Super Heat Dissipation,Durable And Oil Saving,Stable Performance.
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$69.99
- FITMENT:High Performance Bore cylinder kit fit for 4 stroke GY6 125cc-150cc 58.5mm(2.3″) 152QMI 157QMJ engine.Top end rebuild kit compatible with most of Chinese Made Scooters and ATVs,such as JONWAY,JMSTAR,ROKETA,SUNL,TANK,PEACE,TAOTAO. NOTE:NOT FIT for GY6B Engine with 57mm Stud Spacing.
- SIZE:Inner diameter of cylinder:58.5mm/2.3″, Hole spacing:54mm/2.12″, Outer diameter of piston pin:15mm/5.9″. An aftermarket engine kits affordable and easy to install with all necessities.
- REBUILD OUR COMPLETE ENGINE:Top end rebuild kits contains all necessary to rebuild the top end on our motorcycle or ATV.Package include: Cylinder x1,Piston Kit x1,Piston Ring Set x1,Gasket Kit x1,Spark Plug x1,Industrial Gloves x2.
- HIGH QUALITY MATERIAL:The powersports engine kits are made of durable material.Piston kits are made of strong aluminium, with excellent wear resistance,fatigue resistance,corrosion resistance and high temperature resistance.
- GOOD SEALING PERFORMANCE:Cylinder piston ring gasket kit with precise density to provide a reliable seal with minimal tightening.A pair of industrial gloves for you to keep your hands clean and protected while you install the product.
- RELIABLE A7TC SPARK PLUG:High quality alloys and new ceramic insulators processed by precision instruments make the spark plug wear-resistant, high-temperature resistant,safe,long-lasting.Effectively prevent the gas from leaking out and prevent the engine from shaking.
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$59.99
- Fitment – Compatible with the Chinese GY6 4-stroke 170cc 157QMI Engine (76mm bolt pattern); not compatible with 80mm bolt pattern engines
- Material – Made of aluminum alloy, it boasts light weight, excellent heat dissipation, and high strength and stiffness to withstand cylinder pressure and loads.
- Specification – Inner Diameter: 61mm and Outer Diameter: 65mm,.Outer Diameter of Piston Pin: 15mm
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$59.99
- nner diameter of cylinder: 47mm,outer diameter of piston pin: 13mm.
- Replacement for gy6 49cc 50cc 60cc 80cc engine.
- Made of high-strength aluminum alloy and wear-resistant coating, it has excellent high-temperature and wear-resistant performance, and its robust structural design is able to maintain stability under high loads and long-time running conditions, prolonging the life of the engine and reducing maintenance costs.
- The installation process is simple and quick, without the need for complex modifications, allowing you to easily complete the engine upgrade and quickly improve the performance of your vehicle.
- Products include cylinders, pistons, piston rings, piston pins, piston pin clips, valve seals, gaskets, tensioner gaskets, exhaust gaskets, intake and exhaust bolts, and exhaust nuts.