Customer Ratings
Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
FMF 044455 Factory 4.1 Slip-On Exhaust Pipe Blue 2019-2026 Yamaha YZ 250F YZ250F
Free
Questions? Call or text us at:1-888-927-3076
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Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
- The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally
- In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
- The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
- Massive Power gains throughout the RPM range.
- Huge weight savings
- RTS (Rapid Tuning System)
| Muffler Material | Titanium |
| Riding Style | Off-Road |
| Type | Slip-On |
| Muffler Color/Finish | Anodized Blue |
| End Cap Material | Carbon Fiber |
| Units | Each |
| Model | Factory 4.1 RCT |
| Pipe Material | Titanium |
| Product Name | Muffler |
| 2020-2026 | Yamaha | YZ250FX | - | - |
| 2019-2026 | Yamaha | YZ250F | - | - |
