Prox Main Jet for Mikuni Carburetor Size 400

This Prox size 400 main jet is a precision component for Mikuni carburetors, designed for riders who want to precisely adjust the fuel mapping of their 2-stroke engine. Ideal for enthusiasts and professionals seeking reliable, consistent performance during races or long rides.

• Size: 400 main jet – precisely metered fuel delivery for optimal tuning.
• Material: High-quality brass for durability and excellent corrosion resistance.
• Compatibility: Designed for Mikuni carburetors, suitable for a wide range of 2-stroke motocross/enduro engines.
• Precision Design: Accurate bore and tight tolerances for consistent fuel metering across all riding conditions.
• Easy Installation: Simple replacement thanks to standard Mikuni exterior dimensions, no modifications required.

What you can achieve with it: a precisely tuned fuel mixture leads to smoother acceleration, better throttle response, and more stable RPM at both low and mid-high RPM. Using the correct main jet allows you to optimize performance across different atmospheric and altitude conditions, while maintaining fuel efficiency and engine responsiveness. This component delivers Mikuni quality and craftsmanship, making your carburetion system more reliable and consistent throughout the riding season.