Top 10 Best Gy6 Big Bore Kit

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,IntakeExhaust Studs,Exhaust Nut. 5. High Performance Upgrade 50mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine.

This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.. 69mm valve length version. Simple Installation. With cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, spring sets, copper roller sets, 6pins racing AC CDI, ignition coil and racing 3-electrode spark plug. Upgrades parts kits for most of 50cc scooter.

This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.. 64mm valve length version. Easy Installation. Upgrade engine parts included cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, clutch spring sets, copper roller sets, 6pins racing AC CDI, ignition coil and racing 3-electrode spark plug. Upgrades parts kits for most of 50cc scooter.

Designed For Scooters - This engine kit is made for scooters with 139QMB and 49cc and 50cc GY6 engines. It comes with a 50mm cylinder block with 90cc displacement, a racing AC CDI, and A7TC spark plugs.. Power Into Overdrive - Designed to boost and enhance a scooter's horsepower, as well as torque for better acceleration. The larger size allows for increased combustion and burning of air and fuel.. Built To Last - Choose mod parts you can trust. This big bore kit for 49cc scooter's piston rings are made from alloy while the piston is made from aluminum. The cylinder is crafted out of strong steel.. No Frills Installation - Installing and setting up this 49cc bore kit is a breeze. The package includes a detailed and easy-to-follow instruction manual to help you through the installation process.. We Got Your Back - We stand by the quality of our products. If you're not satisfied with the performance of the kit, contact us to avail of our no questions asked 1-year replacement warranty..

SpecificationDiameter of the Kitmm 61 Diameter of Piston Pinmm 15 Diaplacement 170CC180CC Outer Diamter of Cylinder Skirtmm 65 Middle Height of Cylindermm 69 Total Height of Cylindermm 90 Total Height of Pistonmm 38.5 Compression Height of Pistonmm 20. Premium MaterialThis cylinder kit is made of high quality metal, can replace the original correctly, 100 new high quality, durable.. For DisplacementInclude Jog 50,90,100, GY6 50,60,70,80,100,125,150,CNCF 250,YP VOG 250 260 300. Package Includes1Big Bore Cylinder Kit inclued Camshaft and Cylinder Head, Gaskets. NOTEInstruction not included, professional installation is always recommended..

Cylinder Bore 57.4mm Non-EGR Cylinder body. 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 125cc150cc engine for most of chinese scooter, atv and go karts. Parts includedGY6 150cc Cylinder Head Comp, 57.4mm Bore Cylinder Block, Set of 57.4mm Piston Assy, Piston, Rings and Wrist Pin, Full Set of Engine Gasket, 6pins CDI, Ignition coil, DC regulator, relay, A7TC Spark Plug, Set of Intake Manifold and Muffler Bolts, and Exhaust locking ha, Set of 14 Gram roller , Rocker Arms, Valve Seals, Oil Pump Assy with Driving Gear, Camshaft, Camshaft chain 90, belt 8351830, Chain adjuster, Oil screen, spring, cover and oil seal, Starter clutch, intake mani.

Easy installation You can install this kit directly to your GY6 125cc -150cc engine. Cylinder Sleeve ID 58.5mm Cylinder Sleeve OD 60.3mm. Outer Diameter of Piston Pin 15mm. Only Fit 54mm Stud Spacing GY6 125cc 150cc 157QMJ Engine. Will Not fit GY6B Engine with 57mm Stud Spacing0mm Bolt Pattern. 5.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,IntakeExhaust Studs,Exhaust Nut.

The kit fits 4 stroke GY6 125cc and 150cc scooter 157QMJ engine. 180 days warranty and 100 money back guarantee if not satisfied. 57.4mm Cylinder Bore,15mm wrist pin. Comes with high performance gray piston, orange ignition coil and cdi box. The kits comes with 2 pieces of 3-elecrode spark plug for better performance.

Cylinder diameter57.4 mm2.25Piston diameter57.4mm2.25Piston pin diameter15mm0.59Piston pin length42mm1.65Please check the size carefully before you place the order.. Big Bore Cylinder Kit Replacement for TaoTao SUNL Buyang JCL Baja 150cc 4stroke GY6 157QMJ Engine Rebuild Kit Chinese Scooter.. The cylinder is the core of the engine.It burns the mist-like oil and air in it,pushes the piston inside to move up and down,converts chemical energy into mechanical energy,and generates power.. The reticulated process has good sealing performance,increases the contact surface,increases the oil storage and lubrication function,reduces wear and reduces fuel consumption.Efficient heat dissipation,strong power,durable and wear-resistant.. WarrantyWe are always available to help our customers.If you are not satisfied with the order,please leave us a message.Wish you have a happy shopping experience,we are committed to providing the best service..

1.Please note this kit is only used for GY6 139QMB 4-Stroke Engine.. 2.Inner Diameter of Cylinder 52mm. 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,IntakeExhaust Studs,Exhaust Nut. 5. High Performance Upgrade 52mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine.