MIKUNI Carburetors RS Series 34 4-Cylinder Set RS34-D21-K

If you're serious about extracting maximum horsepower from a four-cylinder race engine, the MIKUNI RS34-D21-K carburetor set delivers the precision fuel metering and throttle response that professional road race and drag race teams depend on. The flat throttle valve design and direct-spray accelerator pump eliminate hesitation and give you instantaneous engine response when it matters most. With adjustable jetting, tunable jet needles, and a purpose-built enrichment starter system, these carbs adapt to your specific application and deliver consistent performance across the rev range.

• Four-cylinder inline configuration
• Flat throttle valve design
• Direct-spray accelerator pump
• Adjustable jet needle slots
• Adjustable accelerator pump
• Adjustable idle screw
• Adjustable throttle return spring
• Enrichment starter system
• Float bowl atmospheric vent
• CNC-precision fuel metering
• Bolt-on installation (verify carb spacing)
• Jetting varies by application
• Larger spigot O.D.'s may require different mounting flanges
• Made in Japan
• MPN: RS34-D21-K