Scooter Big Bore Kit

Bestseller No. 1
Trkimal Performance Upgrade Big Bore Cylinder Kit GY6 80cc 47mm for GY6 49cc 50cc 139QMB ATV Scooter Moped Go Kart
  • 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,Intake&Exhaust Studs,Exhaust Nut
Bestseller No. 2
CLEO GY6 50cc-100cc Cylinder Head Kit Assy 50mm Big Bore with 69mm Valves for 139QMA 139QMB Engine Scooter Moped ATV Go Kart Quad
  • Fit GY6 50-100cc 4 Strokes 139QMA 139QMB Engine Scooter Moped
  • Cylinder Head:Intake Valve OD 18.6mm;Exhaust Valve OD 18mm;Combustion Chamber Diameter-50mm
  • Cylinder Body:Bore 50mm;Piston Diameter 50mm; Piston Pin Diameter 13mm ;
  • Check Pictures and Measurements To Be Sure ,This is the Correct Parts for your Application.
Bestseller No. 3
Chanoc 100cc Big Bore 50mm Cylinder Rebuild Kit for GY6 50cc ATV Moped Scooter 139QMA 139QMB
  • 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
  • Please feel free to message us via Amazon system email for any concern
Bestseller No. 4
CLEO 61mm Big Bore Cylinder Kit With Piston Ring Pin For 4 Strokes GY6 180cc 152QMI 157QMJ Engine Scooter ATV Go Kart Taotao Baja Roketa
  • Fits: GY6 180cc 61mm Big Bore 4 Strokes Scooter Moped ATV Engine
  • Includes cylinder body ,Bore 61mm
  • Includes Piston kit and Top end gasket set
  • Piston Diameter:61mm Piston Pin Diameter:15mm
  • Bottom hole distance: 63mm Center hole distance: 55mm
Bestseller No. 5
Complete GY6 Cylinder Head Rebuild Kits with valves, Trkimal 57.4mm 150cc Big Bore Upgrade Kits for 4 stroke 157QMJ Engines Chinese scooter moped parts, GY6 Engine parts Sunl Roketa Peace JCL
  • 【Cylinder Bore】: 57.4mm / Non-EGR Cylinder
  • 【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 150cc engine for most of chinese scooter, atv and go karts
  • 【Parts included】:GY6 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 835*18*30, Chain adjuster, Oil screen, spring, cover and oil seal, Starter clutch, intake mani
Bestseller No. 6
GY6 Cylinder Rebuild Kits Kymlaa 100cc Big Bore Kit for 69mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring
  • 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
Bestseller No. 7
Big Bore Kit GY6 50cc to 80cc Scooter Moped 139 QMB 139QMB Cylinder Piston Tao Tao Kazuma
  • FOR GY6 50cc to 80cc Scooter Moped ATV 139 QMB 139QMB
  • Diameter: 47mm (53.2mm)
  • Fits many models suchas YERFDOG, SUNL, SYM, PGO, KYMCO, VENTO, STRADA, ROKETA, FUJI, WILDFIRE, KAZUMA
  • High Quality!!
Bestseller No. 8
Chanoc 80cc Big Bore 47mm Cylinder Rebuild Kit for GY6 49cc 50cc ATV Scooter Moped 139QMA 139QMB
  • Big bore kit for 4 stroke GY6 50 139qma and 139qmb engine
  • Your vehicle will get more power with this item,easier to climb hill than ever before
  • Inner Diameter of Cylinder bore: 47mm,Outer Diameter of Piston Pin: 13mm
  • Upgrade your engine from 50cc to 80cc
  • Please feel free to message us via Amazon system email for any concern
Bestseller No. 9
CLEO GY6 180cc Cylinder Head Kit Assy 61mm Big Bore with 69mm Valves for 152QMI 157QMJ Scooter Moped ATV Go Kart Quad
  • Fit GY6 180cc 4 Strokes 152QMI 157QMJ Engine Scooter Moped
  • Cylinder Head:Intake Valve OD 26mm;Exhaust Valve OD 23mm;Combustion Chamber Diameter-61mm
  • Cylinder Body:Bore 61mm;Piston Diameter 61mm; Piston Pin Diameter 15mm ;
SaleBestseller No. 10
GOOFIT 63mm Big Bore Cylinder Piston Kit for 4-Stroke GY6 180cc Engines ATV Scooter Go Kart
  • 63mm cylinder bore
  • Cylinder kit for GY6 180cc Go Kart and ATV
  • Package including: cylinder body,piston,gasket,piston stud,piston ring,clips
  • Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon)
  • Arrival within 7-15 days (Ships from and sold by GOOFIT)

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