GY6 50cc Carburetor Main Jet

  • GY6 50cc Carburetor Main Jet
This is a Carburetor Main Jet (M4 x .7, length 7.2mm) for the GY6 50cc, 4-Stroke engine. These come in various sizes depending on your application. #74 is standard replacement with stock air box. , #80, and the #84 require a Performance Air Filter system and the #86 requires the Performance Air Filter and Performance Exhaust System to get top performance. Installing a Performance Air Filter and Performance Exhaust System will give you the edge you're looking for.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust System to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't, your engine may sieze on you.

Mortch Motor parts supported the Brands of BAOTIAN, BASHAN, BENZHOU, CFMOTOR, CHARMING, DAYANG, DINLI, FUXIN, GEELY, GILERA, HANGLONG, HAOJIN, HAOJUE, HISUN, HONGZHOU, HUATIAN, JIAJUE, JIANSHE, JINLUN, JMSTAR, JONWAY, KAITONG, KEEWAY, KINROAD, KYMCO, LIFAN, LINGBEN, LINGTIAN, LINHAI, LINTEX, LONCIN, LONGJIA, MAWI, MEIDUO, MOTORRO, PIAGGIO, QINGQI, RHON, RIEJU, SACHS, SHINERAY, SKYGO, SUKIDA, TAOTAO, VESPA, VONROAD, WANGYE, WONJAN, XINGYUE, XINLING, XINTIAN, YIBEN, YINGANG, ZHONGYU, ZNEN, ZONGSHEN, etc.
Note:
1. Please make sure this parts fits your particular model. Many bikes have the same name but use different parts depending on the year of manufacture.
2. The photos are for your reference only, and the goods is subject to the real product which you will receive.
3. Import duties, taxes and other customs related charges are not included. Buyers bear all responsibility for all extra charges incurred (if any).
    Product QR Code
  • Brand: Mortch Motor
  • Product Code: MIGY50-4084
  • Product Viewed: 9510
  • Availability: In Stock
  • Weight: 0.00kg
  • $0.50


Available Options



Payment Options:

Delivery Options:

Related Products

GY6 50cc Cover of Cylinder Head Non EGR
MIGY50-4001A

This is a new 4-bolt, Non-EGR Valve and Cam Cover for the GY6 50cc 139QMB engine. This cover comes complete ready to install. QTY in Box: 22PCs/CT..

$3.13

GY6 80cc Keihin Carburetor Assy PD19 w/ Accelerator
MIGY80-4081A

80cc scooter CVK carburetor designed specifically for GY6 QMB139 4 stroke scooter, ATV, and dirt bike engines. This carburetor is equipped with an ..

$16.00 $16.86

GY6 50cc Crankcase LH (40cm/43cm)
MIGY50-4008

An excellent inexpensive replacement Crankcase LH, Available in 40cm(10" rim), 43cm(12" rim). ..

$21.25

GY6 50cc CVT Front Plate Assy of Drive
MIGY50-4033B

One of the best enhancements you can make on an automatic scooter is the installation of a new. Adding an after-market variator ensures a smooth star..

$3.65

GY6 50cc 8 Pole Stator 4 Wires
MIGY50-4039A

8 coil stator magneto commonly used on 4-stroke 50cc, 125cc and 150cc GY6 scooter engines. Also sometimes referred to as a stator comp. ..

$4.90

GY6 50cc Ignition Coil + Spark Plug Cap
MIGY50-4066

Scooter ignition coil spark plug wire for 50cc-150cc GY6 engines.Two 1/4" terminals with single thru hole mounting. Thru hole inner diameter is 7/1..

$1.46

GY6 50cc CDI Unrestricted 11,000rmp
MIGY50-4070A

Capacitor discharge ignition (CDI module) or ignitor is used on very many gas scooters, ATVs, dirt bikes, and go karts with modern 4-stroke GY6/QMB..

$1.46 $1.87

GY6 BaoTian CDI 45Km Restricted 6Pin
MIGY50-4070C

BaoTian C.D.I 45Km Limited 6Pin, this CDI also supported other brands 45km limited scooters. The CDI controls the spark rate to the spark plug,..

$8.75

GY6 50cc Oil Pump 22T
MIGY50-4051B

A replacement oil pump for use on Chinese 4-stroke GY6 50ccm 139QMB/QMA scooter engines. There are 2 crankshaft versions being factory installed in..

$1.50

GY6 50cc Keihin Carburetor Assy PD18 w/ Accelerator
MIGY50-4081A

50cc scooter CVK carburetor designed specifically for GY6 QMB139 4-stroke scooter, ATV, and dirt bike engines. This carburetor is equipped with an ..

$15.50

GY6 50cc Guide of Valve
MIGY50-4025

A replacement Guide of Valve for GY6 4 stroke engine, make the timing chain working more stable. ø15.55mm ø10.00mm ø5.00mm 28.00mm ..

$1.04

GY6 50cc Oil Seal of Valve
MIGY50-4026

Valve oil seal for GY6 50cc/125cc/150cc engines. If you are seeing white smoke from the exhaust pipe chances are you have a broken valve oil seal. ..

$0.29

GY6 50cc Clutch Pulley w/o Cap
MIGY50-4035

An excellent replacement for the scooter's original rear pulleys. The rear pulley kit comes with fixed and movable halves, clutch and its respective ..

$13.00

GY6 50cc Full Set of Oil Seal
MIGY50-4054

This complete seal set includes most of the engine and chassis joint shaft sealing rings in OEM quality. The seal set consists 4 seals the foll..

$0.80

GY6 125cc Cylinder Block(52.4mm)
MIGY125-3004

A replacement cylinder for the GY6 air cooled engine. QTY in Box: 12PCs/CTN..

$8.25

GY6 125cc 150cc Cover of Crankcase RH
MIGY125-3011

Excellent inexpensive replacement cover of crankcase RH. ..

$6.25

GY6 125cc 150cc Intake Manifold - 2 Injection Pipes
MIGY125-3090B

Intake manifold with dual vacuum fittings for GY6 scooter engines. Fits 125/150cc GY6 engines. Connects the carburetor to the cylinder head, th..

$1.30

GY6 125cc 150cc Oil Pump
MIGY125-3061

A replacement oil pump for use on Chinese 4-stroke GY6 scooter engines. This version is suitable on engines with a crankshaft used to drive the oil..

$1.25

GN125 Ignition Unit CDI
MIGN125-5070

Capacitor discharge ignition (CDI module) or ignitor is used on very many ATVs, dirt bikes, motorcycle and go karts with modern EN125 GN125 GS125, ..

$18.33

GN125 Ignition Coil + Cap Spark Plug
MIGN125-5066A

Scooter ignition coil spark plug wire for 125cc-150cc SUZUKI GN125/GS125 engines. QTY in Box: 50PCs/CTN..

$3.66

GY6 125cc 150cc Full Set of Oil Seal
MIGY125-3069

This complete seal set includes most of the engine and chassis joint shaft sealing rings in OEM quality. The seal set consists 4 seals the followi..

$0.88

GY6 125cc 150cc CDI Unrestricted 11,000rmp
MIGY125-3080

Capacitor discharge ignition (CDI module) or ignitor is used on very many gas scooters, ATVs, dirt bikes, and go karts with modern 4-stroke GY6/QMB..

$1.87

GY6 Vacuum Fuel Pump
MIFPUMP-B007

Vacuum Fuel Pumps employ an engine’s fluctuation in crankcase pressure to pump fuel from a remote fuel tank to an engine’s carburetor.This is a low..

$3.56

GY6 50cc 8 Pole Stator 5 Wires
MIGY50-4039B

8 coil stator magneto commonly used on 4-stroke 50cc, 125cc and 150cc GY6 scooter engines. Also sometimes referred to as a stator comp. 5 wires..

$4.90

GY6 50cc Speed Shift Tray
MIGY50-4033C

The Speed Shift Tray is placed inside of the variator. ø73.5mm..

$0.85

GY6 50cc Cushion Rubber for Speed Shift Tray
MIGY50-4033D

These are the variator glide key guides, or Slide for the Chinese GY6, 4T, 139QMB, 50cc variator. Groove Width: 10mm Groove Depth: 8m..

$0.23

GY6 50cc YOU-ALL Carburetor Assy PD18 w/ Accelerator
MIGY50-4081B

50cc scooter CVK carburetor designed specifically for GY6 QMB139 4-stroke scooter, ATV, and dirt bike engines. This carburetor is equipped with an ..

$15.00

GY6 50cc Racing Variator Set
MIGY50-R4033A

This is a High Quality High Performance variator for the GY6 50 and Honda Dio engine. This Variator kit also includes a set of Performance Roller/S..

$7.25

GY6 50cc Performance Cushion Rubber
MIGY50-R4033D

These are the variator glide key guides, or Slide for the Chinese GY6, 4T, 139QMB, 50cc variator.Variator guides (or 'sliders') are the spacers bet..

$0.38

GY6 80cc YOU-ALL Carburetor Assy PD19 w/ Accelerator
MIGY80-4081B

80cc scooter CVK carburetor designed specifically for GY6 QMB139 4-stroke scooter, ATV, and dirt bike engines. This carburetor is equipped with an ..

$15.50

GY6 CDI 45Km Restricted 6Pin
MIGY50-4070E

GY6 CDI 45Km Limited 6Pin, this CDI also supported other brands 45km limited scooters. The CDI controls the spark rate to the spark plug, and s..

$8.75

GY6 Stator Trigger
MIGY50-4039Z

The Magneto Stator Ignition Pick Up Trigger fits for GY6 50cc-150cc engine.Length: 27mmWidth: 22mmHeight: 20mmInstallation hole spacing: 30mm..

$0.50

Bush for GY6 50cc Front Variator
MIGY50-4033Z

These are Bush for GY6 50cc Front Variator for the Chinese GY6, 4T, 139QMB, 50cc engine. O/D: 20mmI/D: 14mm Height: 38mm..

$0.55

GY6 50cc O-Ring of Cylinder Head Cover
MIGY50-4001Z

This is the replacement Valve Cover Gasket/O-Ring for both the EGR and Non-EGR type Cylinder head for the 4 stroke GY6 50 139QMB engine.107*99*2.5mm..

$0.20

GY6 80cc Kunfu Carburetor Assy PD19
MIGY80-K4081

80cc scooter CVK Kunfu carburetor designed specifically for GY6 QMB139 4 stroke scooter, ATV, and dirt bike engines. This carburetor is equipped wi..

$15.50

GY6 50cc Kunfu Carburetor Assy PD18 w/ Accelerator
MIGY50-K4081

50cc scooter CVK carburetor with accelerator pump and electric choke designed specifically for GY6 QMB139 4-stroke scooter, ATV, and dirt bike engine..

$15.00

GY6 50cc Plate Drive Gear
MIGY50-4033F

These are gear for GY6 50cc Front Variator for the Chinese GY6, 4T, 139QMB, 50cc engine...

$0.90

GY6 50cc Cover of Cylinder Head w/ EGR
MIGY50-4001B

This is a new 4-bolt, EGR Valve and Cam Cover for the GY6 50cc 139QMB engine. This cover comes complete ready to install. QTY in Box: 22PCs/CTN..

$6.60