FMF Factory 4.1 RCT Aluminum Slip-On - Yamaha WR250F 2020-2022
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Get factory-level performance with the FMF Factory 4.1 RCT Aluminum Slip-On. Built around FMF's Resonance Chamber Technology, the 4.1 RCT is engineered to deliver serious power gains while keeping sound levels in check, making it one of the most popular race exhausts in the paddock.
This version pairs an aluminum canister with a durable stainless steel mid-pipe, giving you the same proven RCT performance at a lower price than titanium. FMF's Factory Forward design pulls the muffler closer to the center of the bike for better mass centralization and less exposure to crash damage. Each application is tuned with its own core specification, so the power is matched to your machine. The innovative rear end cap makes it simple to swap tuning tip inserts or install the included spark arrestor for trail riding.
β Fits
- 2020-2022 Yamaha WR250F
β Features
- Resonance Chamber Technology (RCT) for more power with lower sound
- Patented core and canister shape for more sound-absorbing volume
- Aluminum canister with stainless steel mid-pipe
- Factory Forward design centralizes mass and resists crash damage
- Application-specific core tuning
- Rear end cap accepts tuning tip inserts or spark arrestor
- Carbon fiber end cap
- For closed-course competition use only
β What's Included
- (1) FMF Factory 4.1 RCT aluminum slip-on muffler with stainless mid-pipe
- Spark arrestor insert and wash plug
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π¦ Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.