Designed for inline four cylinder performance to offer higher horsepower gains with the worlds top motorcycle road race and drag race teams
Offers smooth, controllable throttle response with precise fuel metering demands with high volume fuel/air required by race engines

Flat throttle valve design provides the strongest signal for precise and instantaneous throttle response
Includes adjustable accelerator pump and adjustable idle screw
Adjustable throttle return spring allows spring return pressure
Includes enrichment starter system for easier cold starting
Jet needle has easy adjustment slots for quick tuning
Float bowl vent allows atmospheric pressure into float bowl for fuel flow
Accelerator pump spray nozzle shoots fuel directly into the intake tract for immediate engine response
Jetting may need to be changed per application
Larger diameter spigot O.D.'s may require different mounting flanges 
Use genuine Mikuni jets and parts for best results
Made in Japan