Prox Main Jet for Mikuni Carburetor Size 500

The ProX size 500 main jet is a precision main jet for Mikuni carburetors, ideal for off-road motorcycles that require reliable fuel delivery. This set includes 5 pieces, making replacement quick and easy during maintenance or tuning.

• Type: Main Jet for Mikuni 4/042 series
• Size: 500 (433-500 value depending on series) for optimal fuel delivery at high RPM
• Quantity per package: 5 pieces
• Material: Brass, sturdy and corrosion-resistant
• Precision/OEM Compatibility: Made in Japan to OEM specifications for reliable tuning.
• Application: Suitable for Mikuni carburetors across a wide range of off-road models and racing applications

The main jet controls fuel delivery across the entire RPM range, making the engine more responsive, maximizing engine power, and keeping tuning stable across different riding conditions. Thanks to its precise sizing and durable materials, this ProX component delivers consistent performance and simplifies maintenance when multiple jets are needed for tuning tests.