Genuine Keihin Fuel Carburetor Carb ATV MX 39mm FCR-MX39 Air Cut Valve Hot Start

Has a Choke, Hot Start, and Air Cut Valve

Compatible with Keihin FCR-MX Series Off-Road Racing Carburetor
The ultimate for off-road performance. Keihin has developed an FCR carburetor designed for the specialized needs of the off-road racer. The FCR-MX carburetor has many new features to take motocross and ATV performance to the next level. These are some of the unique features of the Keihin FCR-MX for off-road applications:
- Over-flow drain joint and Tube
- Hot re-start knob
- Throttle Cable enclosure
- High capacity float chamber
- Air Cut-Off Valve (ACV) for de-acceleration enrichment (only on FCR-MX carburetors listed)
- Float chamber baffle for rough terrain
- Quad Vents

FCR-MX Standard Jetting Specifications
Carburetor: FCR-MX39 with Air Cut Valve, Hot Start
Main Jet: #160
Main Air Jet: #200
Slow Jet: #45
Slow Air Jet: #100
Jet Needle: OC-EMR
Throttle Valve Cutaway: 1.5
Needle Valve Seat: 3.8
Float Height: 9mm
Engine Size: 350cc-500cc
Includes Accelerator Pump

Fits Yamaha
2001-02 WR 426

This is for the carb only

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

Photo may not be an exact representation of the product.