MIKUNI 4/042-400 Hex Main Jets - High-Performance Fuel Jet Kit for Powersports Engines

Upgrade your powersports engine's performance with MIKUNI's 4/042-400 Hex Main Jets. These precision-machined fuel jets deliver consistent fuel flow for smoother throttle response, enhanced power delivery, and reliable operation in demanding off-road conditions.

Key Features

• Hexagonal Design: Ensures secure fitment and precise fuel metering in MIKUNI carburetor systems.
• High-Quality Brass: Durable construction resists corrosion and maintains accuracy under extreme temperatures.
• Easy Installation: Compatible with standard MIKUNI carburetor setups for quick tuning adjustments.

Why Choose This Product

These main jets are essential for riders seeking to fine-tune their engine's air-fuel ratio. The hex design prevents loosening during high-speed operation, while the precise bore size ensures optimal fuel flow for improved horsepower and fuel efficiency. Whether you're modifying a dirt bike, ATV, or off-road motorcycle, these jets provide the reliability and performance needed for aggressive riding conditions.