MIKUNI 4/042-270 Hex Main Jets - High-Performance Fuel Jet Kit for Powersports Engines

Upgrade your powersports engine's performance with MIKUNI's precision-crafted Hex Main Jets. These critical fuel metering components ensure optimal air-fuel ratios for enhanced power, responsiveness, and fuel efficiency across a wide range of riding conditions.

Key Features

• Hexagonal Jet Design: Ensures precise fuel flow control and easy installation with standard tools
• Universal Compatibility: Fits most MIKUNI carburetor models for motorcycles, ATVs, and UTVs
• Durable Brass Construction: Resists corrosion and maintains accuracy under extreme temperatures
• Exact Fitment: 4/042-270 specification guarantees proper sealing and metering performance

Why Choose This Product

Whether you're tuning a high-output motorcycle or optimizing an ATV engine, these main jets deliver consistent performance with every ride. The hexagonal design simplifies maintenance while maintaining critical fuel flow accuracy. Riders benefit from improved throttle response, better fuel economy, and reliable performance in both stock and modified engine setups.