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G- Cylinder Stud 168mm 2V (139QMB)

G- Cylinder Stud 168mm 2V (139QMB)
G- Cylinder Stud 168mm 2V (139QMB)
G- Cylinder Stud 168mm 2V (139QMB)
G- Cylinder Stud 168mm 2V (139QMB)

Description: Cylinder Stud M7x168mm 2-Valve for 139QMB 49/50cc 4-stroke engines.

NOTE: Long thread screw into the crankcase, the shorter thread is nutted. Recommended apply blue Loctite and torque no more than 6 ft-lbs max. on these 7mm studs. For assurance please consult your manufacturer's torque specs. Sold separate Cylinder Stud Nut M7x12.75mm Set (Part# NK101.86).


Include the following Cylinder stud.

•    1x Cylinder Stud (Rt Crankcase): M7x168mm 
•    Thread Length: 18mm (end-Crankcase)
•    Thread Length: 14mm (end-Rockrarm)
•    Fit Intake Studs: M6 / Nuts: M6 Socket: 10mm
•    Fit Exhaust Studs: M6 / Nuts: M6 Socket: 10mm
•    Fit Rocker Arm Assembly: 64mm or 69mm / Feeler Gauge: .004in / .005in / Socket: 9mm
•    Fit Cylinder Studs: 176mm / Nuts: M7 / Washers: M7 / Side Bolts: M6 / Socket: 8mm-10mm
•    Fit 50mm Stud Spacing /Diagonal 70.5mm
•    Fit Crankshaft 41.4mm to 44mm
•    Fit Dowel Pin Set (
•    Fit QMB 49/50cc+

Supported Models: 139QMB 49cc-50cc engines, Baja SC50, Boreem (BMS) 50, Filly 50, Kymco 50, Panterra 50, Qingqi 50, QLink 50, Roketa 50, SUNL 50, SYM 50, Tank 50, TaoTao 50, and virtually any other scooter engine with these measurements.

Item Weight & Product Dimensions:
•    0.23 pounds | 6.614" (L) x 0.276" (D)

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G- Cylinder Stud 168mm 2V (139QMB)
  • Stock: 39
  • Part #: 1100-4004
Sold: 2
Views: 3742
Price in reward points: 2