MIKUNI Jet Needle J8-6FJ41

Fine-tuning your carb's mid-range fuel delivery is critical for consistent throttle response and smooth power transitions. The MIKUNI J8-6FJ41 jet needle is engineered to optimize fuel mixture in that crucial mid-range throttle window where most driving happens. If your Mikuni carburetor feels lean or rich during acceleration, swapping the jet needle is one of the most direct ways to dial in precise performance without a complete carb rebuild.

This OEM-specification needle fits select Mikuni VM carburetors and certain OE Mikuni applications, making it an ideal replacement for worn or incorrectly sized needles. Japanese manufacturing ensures tight tolerances and reliable performance across a wide range of operating conditions.

• Manufacturer: MIKUNI
• Part Number: J8-6FJ41
• Application: Mikuni VM carburetors
• Function: Mid-range fuel mixture control
• Origin: Made in Japan
• Installation: Bolt-on replacement
• Material: Precision-engineered steel
• Fitment: Vehicle-specific (verify compatibility)

Note: Mikuni does not publish complete dimensional specifications for all jet needles. Use needle dimension charting or consult a carburetor specialist to confirm exact measurements before ordering.