Mikuni FRS34-D21-K RS Series Carburetor - High-Performance Radial Flat Slide for Inline 4-Cylinder Motorcycles

Elevate your motorcycle's performance with the Mikuni FRS34-D21-K RS Series Carburetor. Engineered for inline four-cylinder engines, this high-flow radial flat slide carburetor delivers exceptional horsepower gains through optimized induction tract design and precise fuel delivery.

Key Features

• Radial Flat Slide Design: Maximizes airflow efficiency with a smoothbore induction tract for consistent power delivery across RPM ranges.
• Adjustable Accelerator Pump: Enhances throttle response with instant fuel delivery, particularly effective in low-to-mid RPM ranges for aggressive riding.
• Compact Lightweight Construction: Reduces overall engine weight without compromising structural integrity or performance capabilities.
• Standard Mikuni Jet Compatibility: Simplifies tuning and maintenance with widely available replacement jets and components.

Why Choose This Product

Whether you're modifying a sport bike or racing machine, the FRS34-D21-K offers a perfect balance of power, responsiveness, and ease of customization. Its radial flat slide design minimizes turbulence for cleaner airflow, while the adjustable accelerator pump ensures precise fuel metering. The compact footprint makes it ideal for tight engine compartments, and the use of standard Mikuni jets reduces long-term maintenance costs. This carburetor is engineered to deliver measurable horsepower gains without sacrificing reliability or drivability.