MIKUNI F4/042-450 Hex Main Jets - Precision Brass Jets for High-Performance Engines

Upgrade your Mikuni carburetor's fuel delivery system with these precision-engineered hex main jets. Designed for racing and off-road performance, these brass jets ensure optimal fuel flow control and consistent engine performance under extreme conditions.

Key Features

• Brass Construction: Durable, corrosion-resistant material for long-lasting performance in harsh environments.
• 0.042" Orifice Size: 1.07mm diameter flow rate ensures precise fuel metering for high-output engines.
• Hex Head Design: Easy installation and adjustment with standard M5 x 0.75 thread size compatibility.
• Lightweight Build: Only 0.5 grams per jet reduces engine load while maintaining structural integrity.
• Exact Fitment: Specifically engineered for Mikuni F4 carburetor systems with 450cc displacement.

Why Choose This Product

These hex main jets deliver unmatched precision and reliability for power sports enthusiasts. The brass material resists clogging and wear, while the standardized thread size ensures seamless integration with existing carburetor setups. Riders will experience improved throttle response, consistent fuel delivery, and enhanced engine efficiency across a range of operating conditions. Whether you're tuning a racing engine or optimizing an off-road vehicle, these jets provide the critical fuel flow control needed to maximize performance and durability.