Genuine Mikuni VM20 Flange Carburetor Standard Jetting Left Idle Screw VM20-273

Mikuni VM Series Round Slide Single Carburetors

These are the most popular high performance singles carburetor in the sport of motorcycling. Mikuni's VM series round slide single Carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle or ATV applications for motocross, Enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines.

Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. The VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding condition. VM Series Carburetors are sold pre-jetted.

Please Note: Changes and jetting modifications are for use only on racing machines or similar off-road vehicles where pollution laws are not in effect. Not legal for vehicles operated on public highways in the State of California or other areas where similar pollution laws may apply.

"Left" Idle Screw Standard Jetting Specifications
Carburetor Size: VM20 Flange
Main Jet: 4/042 #180
Pilot Jet: M28/1001 #22.5
Needle Jet: #239 O-6
Jet Needle: #4J13
Throttle Valve Cutaway: VM20/491 2.0
Air Jet: 0.5 Fixed
Needle Valve Set: VM15/172-1.5
Float Height: 20-22mm
Mikuni No.: VM20-273

Carburetor Dimensions:
A: 50.8 Bolt Center
B: 66mm
C: 115mm
D: 43mm
Total Width: 76.5mm
Throttle Adjust Position: Left
Air Screw Position: Left
Weight (g): 546
Throttle Valve: -
Throttle Valve Material: Aluminum

This is for the carb only

We are an authorized Mikuni Dealer. These are Genuine Mikuni carburetors, not Chinese knock offs.

Photo may not be an exact representation of the product.