MIKUNI Main Jet 4/042-400 for Motorcycle Carburetors

Large hex type used in most Mikuni carburetors. Mikuni # 4/042.

The MIKUNI Main Jet 4/042-400 is a high-quality replacement component designed to optimize your motorcycle's fuel delivery system. Crafted with precision, this main jet ensures proper air-fuel mixture for improved engine performance and responsiveness. Its durable construction guarantees long-lasting operation, making it an essential part for maintaining peak engine efficiency.

Engineered for compatibility with a variety of motorcycle models, the MIKUNI 4/042-400 main jet features a compact design that fits seamlessly into your existing carburetor assembly. Whether you're tuning your bike for racing or regular riding, this jet provides the fine fuel metering control necessary for optimal power output and smooth acceleration.

Installation is straightforward, and the jet's robust build resists corrosion and wear over time. Regular replacement with genuine MIKUNI parts like this main jet helps sustain engine health, improve throttle response, and ensure consistent performance across different riding conditions.

Features:

• Precision-machined for accurate fuel metering

• Durable construction resists corrosion and wear

• Compatible with a wide range of motorcycle carburetors

• Easy to install for quick maintenance

• Optimizes engine performance and responsiveness