Top 6 Best Big Bore Kit For 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.. 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.

1.Inner Diameter of Cylinder bore 50mm, Outer Diameter of Piston Pin 13mm. 2.Outer Diameter of Piston 50mm. 3.Easy installation, Upgrade your engine from 50cc to 100cc with more power to climb hill. 4.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,IntakeExhaust Studs,Exhaust Nut.

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..

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.

Cylinder Bore 47mm Non-EGR Cylinder. Valve length 69mm. Apply to GY6 4 stroke 49cc 50cc 60cc 80cc engine upgrade for most of chinese scooter, atv and go karts. Parts includedGY6 80cc Cylinder Head with 69mm valve, 47mm Bore Cylinder Block, Set of 47mm Piston Assy, Piston, Rings and Wrist Pin, Full Set of Engine Gasket, 6pins CDI, Ignition coil, 4pin AC regulator, relay, A7TC Spark Plug, Set of Intake Manifold and Muffler Bolts, and Exhaust locking ha, Set of 8.5 Gram roller , 69mm Rocker Arms, Valve Seals, Oil Pump Assy with Driving Gear, Camshaft, Camshaft chain 82, belt 6991830, Chain adjuster, Oil screen, spring, cover and oil seal, Starter clu. Fit toRoketa, Sunl, Baja, Taotao, Panterra, Redcat Tank Giovanni Wildfire Xtreme Seaseng Qlink Yiben Jonway Jmstar, Vento.

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.

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.

1.Inner Diameter of Cylinder 47mm. 2.Outer Diameter of Piston Pin 13mm. 3.Easy installation, Upgrade your engine from 50cc to 80cc with more power. 4.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,IntakeExhaust Studs,Exhaust Nut. 5.Please contact us if you have any problem about our products, and we will offer you an satisfied solution.

This kit can be only used for GY6 139QMB 4 Stroke Engine.. Inner Diameter of Cylinder 50mm,Outer Diameter of Piston Pin 13mm. Upgrade your engine from 50cc to 100cc. Your vehicle will get more power with this item,easier to climb hill than ever before. 12 months warranty, please feel free to message us via Amazon system email for any concern.

This big bore kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.. We have 2 versions, 64mm and 69mm valve length version. Please confirm before.. Easy installation. With racing AC CDI, ignition coil and racing spark plug included. This is one of the best upgrades you can do to your 50cc Scooter.