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FMF Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FMF Racing lineup with fast shipping and expert fitment support — order with confidence.
Experience the pinnacle of exhaust engineering with the FMF Factory 4.1 RCT Muffler. Designed for the serious racer, this system features Resonance Chamber Technology (RCT) to reduce sound while maintaining maximum power output. The stainless steel and aluminum construction offers an ideal balance of weight savings and extreme durability, ensuring your Yamaha YZ450F or YZ450FX performs at its peak in any condition.
The Factory 4.1 RCT is not just a muffler; it is a performance-enhancing tool that transforms your engine's response. The sleek design integrates perfectly with the lines of your Yamaha, providing a professional look and a deep, aggressive exhaust note. When you need consistent, high-level performance on the track, trust the quality of FMF Racing parts available at GGCRACING.
| Years | Make | Model | Trim |
|---|---|---|---|
| 2019 | Yamaha | WR450F | Base |
| 2018-2021 | Yamaha | YZ450F | Base |
| 2019-2020 | Yamaha | YZ450FX | Base |
Other popular FMF Racing products customers consider together:
FMF Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FMF Racing lineup with fast shipping and expert fitment support — order with confidence.
Experience the pinnacle of exhaust engineering with the FMF Factory 4.1 RCT Muffler. Designed for the serious racer, this system features Resonance Chamber Technology (RCT) to reduce sound while maintaining maximum power output. The stainless steel and aluminum construction offers an ideal balance of weight savings and extreme durability, ensuring your Yamaha YZ450F or YZ450FX performs at its peak in any condition.
The Factory 4.1 RCT is not just a muffler; it is a performance-enhancing tool that transforms your engine's response. The sleek design integrates perfectly with the lines of your Yamaha, providing a professional look and a deep, aggressive exhaust note. When you need consistent, high-level performance on the track, trust the quality of FMF Racing parts available at GGCRACING.
| Years | Make | Model | Trim |
|---|---|---|---|
| 2019 | Yamaha | WR450F | Base |
| 2018-2021 | Yamaha | YZ450F | Base |
| 2019-2020 | Yamaha | YZ450FX | Base |
Other popular FMF Racing products customers consider together:
