MIKUNI F785-24001-R-4 Needle Jet - High-Performance Carburetor Fuel System Component

Description

Upgrade your carburetor system with MIKUNI's F785-24001-R-4 Needle Jet, designed to deliver precise fuel metering for maximum power and efficiency. This critical component ensures smooth throttle response and consistent performance across a range of riding conditions.

Key Features

  • High-Precision Fuel Metering: Ensures accurate fuel delivery for optimal engine performance and fuel efficiency.
  • Durable Stainless Steel Construction: Resists corrosion and wear for long-lasting reliability in harsh environments.
  • Universal Compatibility: Fits most MIKUNI carburetor models for easy installation and upgrade potential.
  • Smooth Throttle Response: Fine-tuned needle jet design delivers consistent power delivery across RPM ranges.
  • Easy Maintenance: Simple disassembly and cleaning for hassle-free upkeep.

Why Choose This Product

Whether you're tuning a high-performance motorcycle or optimizing a utility vehicle, this Needle Jet offers unmatched precision and durability. Its corrosion-resistant construction ensures consistent performance in extreme weather, while the universal fitment makes it an ideal upgrade for carburetor enthusiasts. The precise fuel metering enhances engine responsiveness, delivering better throttle control and improved fuel economy without sacrificing power. Perfect for riders who demand reliability and performance from their powersports equipment.
SKU: GMDA00F32C
MPN: F785-24001-R-4
Brand: MIKUNI
Stock: Only 2 left!
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Upgrade your carburetor system with MIKUNI's F785-24001-R-4 Needle Jet, designed to deliver precise fuel metering for maximum power and efficiency. This critical component ensures smooth throttle response and consistent performance across a range of riding conditions.

Key Features

  • High-Precision Fuel Metering: Ensures accurate fuel delivery for optimal engine performance and fuel efficiency.
  • Durable Stainless Steel Construction: Resists corrosion and wear for long-lasting reliability in harsh environments.
  • Universal Compatibility: Fits most MIKUNI carburetor models for easy installation and upgrade potential.
  • Smooth Throttle Response: Fine-tuned needle jet design delivers consistent power delivery across RPM ranges.
  • Easy Maintenance: Simple disassembly and cleaning for hassle-free upkeep.

Why Choose This Product

Whether you're tuning a high-performance motorcycle or optimizing a utility vehicle, this Needle Jet offers unmatched precision and durability. Its corrosion-resistant construction ensures consistent performance in extreme weather, while the universal fitment makes it an ideal upgrade for carburetor enthusiasts. The precise fuel metering enhances engine responsiveness, delivering better throttle control and improved fuel economy without sacrificing power. Perfect for riders who demand reliability and performance from their powersports equipment.
SKU GMDA00F32C
MPN F785-24001-R-4
Brand MIKUNI
Category Intake/Carb/Fuel System
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Reviews

Make Model Years
Yamaha YZ450F 2008-2014
Yamaha WR450F 2008-2014
Yamaha YZ250F 2006-2009
Yamaha WR250F 2006-2009
Kawasaki KX450F 2004-2007
Kawasaki KX250F 2006-2007

Frequently Asked Questions

Fits Mikuni BS36 and Keihin FCR37/39 carburetors on select Yamaha YZ/WR and Kawasaki KX models.

Yes, genuine Mikuni replacement part with part number F785-24001-R-4.

This is typically used as part of a complete jetting kit. Check your elevation and mods before finalizing jetting.

The 'R-4' designation indicates the taper profile and flow rate for mid-range fueling.

Installation Guide

Difficulty Easy
Est. Time 15 min

Tools Required

  • Small flathead screwdriver
  • Needle nose pliers
  • Carb cleaner

Pro Tips

  • Remove needle jet holder first by twisting counterclockwise. Note original clip position on needle for baseline jetting.

Common Mistakes to Avoid

  • Not cleaning carb passages before install
  • Damaging o-rings during removal

Comparison vs Stock/OEM

Direct OEM replacement needle jet for factory carburetors

Improvements

  • Precise fuel metering for modified engines
  • Better mid-range response when paired with proper jetting

Considerations

  • Same as stock durability, but enables performance tuning

Durability & Warranty

Expected Lifespan Entire carburetor service interval (50+ hours motocross use)
Warranty Mikuni 1-year limited warranty
Maintenance Inspect during carb cleaning, replace if grooves worn or passages clogged

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