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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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Description
FMF Factory 4.1 RCT Muffler - Aluminum 045628 1821-1920The 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
- 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)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Dogs enjoy the treat on inside
Size: Medium (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
My dogs love these. Better than chewing on rawhide
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Great for dogs that chews a lot up everything
Size: Medium (Pack of 1)
Great for a puppy (large puppy) that chews a lot! So far, this toy is indestructible - and is the first toy she hasn’t chewed into bite size pieces! She loves to play with it all the time.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
It’s not hard but great for chewing! Sturdy.
Size: Medium (Pack of 1)
My dog loves it!
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Great for my Sheprador
Size: Large (Pack of 1)
Dog loves it and it's indestructible. Dog loves chewing on it. The little spot to add treats gives the toy a great life as a distraction while I'm gone. It bounces pretty well too. It's cute but I wish this size had different colors. Black gets lost in my house easily.
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Tough!
Size: Large (Pack of 1)
Our dog is a chewer! Fabric toys don’t last - he enjoys ripped them apart. This lasts quite a while. I do watch it because after sometime (month or so), he does get it start separating. He actually got it in half once (looked “interesting” on my floor when we found it and made for a good laugh). We will continue to buy them.
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Reviewed in the United States on September 29, 2025