Main Menu
Your Cart

Stage6 CVK Main Jet 4mm 60-80 10-Pcs Kit (139QMB, GY6)

Stage6 CVK Main Jet 4mm 60-80 10-Pcs Kit (139QMB, GY6)

Description: Stage6 CVK Main Jet 4mm 60-80 10-Pcs Kit for 139QMB 49/50cc, GY6 125/150cc+ carburetors, and 250cc 4-stroke water-cooled 172mm carburetors. This kit is ideal to adjust GY6 carburetors. 10 main jets, are stored in a practical plastic box so you'll find the right one directly without searching around. Also quite a bit cheaper than ordering the jets individually. The kits are available in different sizes; each kit contains 10 M4 main jets. Sizes: 60, 62, 64 ... 80 (without 78)

NOTE: Will work on 139QMB that accepts 4mm main jet ONLY. Most commonly found on GY6 125/150cc+ CVK carburetors.


Includes the following 10 Piece Set (1 of each size main jet).

•    Main Jet Sizes: 60, 62, 64, 66, 68, 70, 72, 74, 76, and 80 RPM
•    Keihin Round Style Main Jet Kit
•    Thread Size: M4 x 0.8mm
•    Overall Length: 8mm
•    Fit 4mm Main Jet Slot
•    Fit CVK Carburetor
•    Fit GY6 125/150cc+
•    Fit QMB 49/50cc+

Supported Models: GY6 139QMB 49cc-50cc 4-stroke, 50QMF 90cc-100cc, 152QMI 125cc, 157QMJ 150cc, 161QMK 170cc, Chinese Scooter, ATV, Genuine Buddy, Kymco, Polaris RZR 170, Ruckus, TaoTao, Vento, and virtually any 5mm main jet slot CVK carburetors.

Item Weight & Package Dimensions:
•   0.0125 pounds | 5.117" (L) x 2.771" (W) x 0.899" (H)   

Write a review

Note: HTML is not translated!
Bad Good
Stage6 CVK Main Jet 4mm 60-80 10-Pcs Kit (139QMB, GY6)
  • Stock: 38
  • Reward Points: 1
  • Part #: S6-28GY6-001
Sold: 3
Views: 2176
Price in reward points: 28