* Shaft Length: 21mm
* Designed for QMB139 engines
KOSO performance Variator drive pulley for GY6 125CC 150CC engine.
check ball, jet, and spring fit in Float bowl of GY6 50CC carburetor.
*Includes Electric Choke
*Inner Diameter (intake side): 24mm
*Outer Diameter (intake side): 32mm
*Inner Diameter (air filter side): 38mm
*Outer Diameter(air filter side): 43mm
*Open & Adjustable Enrichment Screw
*Main Jet Size: #104
*Idle Jet Size: #38
1*GY6 150CC 125CC Carburetor-- 64178
1*150cc manifold intake-- 63087
1*150cc insulator&gasket-- 63083
1*42mm air filter -- 88017 or 90306
GY6 125CC 150CC Carburetor kits with manifold intake, insulator and gasket , 42 air filter is ready to go.
With 12G KOSO Roller Weight
* Overall Length (screw): 20mm
* Thread Size: M5x0.50
*Inner Diameter (intake): 19mm
*Outer Diameter (air filter mount): 38mm
*Main Jet Size: #83
*Electric Choke (plug style): 2-pin, male
*Charcoal Cannister Hook-Up
Thread Size: M5x0.80
Overall Length: 8mm
CVK is for Constant Velocity Keihin
◦Keihin Round Style Main Jet Kit
◦Available in 50 Piece
◦Includes The Following Sizes: #78, #80, #85, #87, #88, #90, #92,#94,#96 & #98
◦50 Piece Set Has 5 of Each Size
◦Thread Size: M4x0.70
◦Overall Length: 7mm
Bolt hole space: 75.33mm
* Number or Teeth:34 ;
* Intake Lobe (widest point): 26.60mm ;
* Exhaust Lobe (widest point): 26.53mm ;
* Uses 16002C3 bearings.
Order Fulfilled in US warehouse. Delivered all over US in 1-4 days.
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