Mikuni RS40-D1-K Carburetor - High-Performance Radial Flat Slide for Inline 4-Cylinder Motorcycles

Elevate your motorcycle's performance with the Mikuni RS40-D1-K radial flat slide carburetor. Engineered for inline four-cylinder engines, this carburetor combines precision engineering with aggressive airflow optimization to deliver unmatched horsepower and throttle responsiveness. Its compact, lightweight design reduces unsprung weight while maintaining exceptional fuel delivery control.

Key Features

• Radial Flat Slide Design: Maximizes airflow through a smoothbore induction tract for increased power output and consistent mid-range torque.
• Adjustable Accelerator Pump: Provides precise low-RPM throttle response for instant power delivery during acceleration.
• Compact Lightweight Construction: Reduces overall engine weight without compromising structural integrity or performance.
• Standard Mikuni Jets: Uses widely available replacement jets for easy maintenance and tuning flexibility.

Why Choose This Product

Whether you're chasing track performance or street dominance, the RS40-D1-K delivers a perfect balance of power and control. Its radial flat slide design minimizes turbulence for smoother power delivery, while the adjustable accelerator pump ensures responsive throttle action across all RPM ranges. The carburetor's compact footprint makes it ideal for modern sport bikes and performance-oriented street machines, offering a lightweight solution without sacrificing flow efficiency. With Mikuni's reputation for reliability, this carburetor is a must-have for riders seeking maximum performance from their inline four-cylinder engines.