MIKUNI Carburetors RS Series 38 4-Cylinder Set RS38-D19-K

If you're running a four-cylinder engine in competition, carburetor tuning directly impacts your power delivery and consistency at the track. The MIKUNI RS Series 38 delivers the fuel metering precision and throttle response that professional road racers and drag teams demand, with adjustability to dial in your specific engine's requirements. This is a proven platform used by top-tier competitors—built for engines that require instant, predictable power.

Technical Specifications:

• MIKUNI RS38 carburetor
• 4-cylinder set configuration
• Flat throttle valve design
• CNC-precision fuel metering
• Direct accelerator pump injection
• Adjustable jet needle
• Adjustable idle screw
• Adjustable accelerator pump
• Adjustable throttle return spring
• Enrichment starter system
• Float bowl atmospheric vent
• Made in Japan
• Universal fitment (spacing verification required)
• Jetting chart included
• May require custom mounting flanges
• Professional tuning recommended