Watch in action

The Ultimate Quiet Performance Muffler

The FMF Racing Hex Q4 Muffler is designed for the rider who needs to meet strict sound requirements without sacrificing engine performance. Utilizing proprietary chamber designs and high-quality packing materials, the Q4 provides a significant reduction in decibels while actually increasing power output across the RPM range. It is the ideal choice for off-road enthusiasts and trail riders who prioritize both performance and responsible sound levels.

Why Choose the Hex Q4?

• Sound Compliance: Engineered to meet most sound regulations without power loss.
• Spark Arrestor: Integrated spark arrestor for safe trail and forest riding.
• Hexagonal Design: Modern look with increased internal volume for better flow.
• Wide Fitment: Compatible with Yamaha YZ250F, YZ250FX, and WR250F models.
• Durable Build: Aerospace-grade materials for maximum longevity.

The Hex Q4 is more than just a quiet muffler; it is a performance-enhancing tool. By smoothing out the power delivery and increasing torque, it makes your bike easier to ride in technical terrain while providing that extra punch when you need it. FMF's commitment to quality ensures that this muffler will stand up to the toughest conditions. Experience the perfect blend of power and silence with this premium exhaust upgrade from GGCRACING.