SKU: 21471959928

FMF - Factory 4.1 RCT Complete System (Gas Gas)

Sale price$435.38 Regular price$483.75
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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For Your Every Summer RSVP, with Code: SUMMER15

Description

FMF - Factory 4.1 RCT Complete System (Gas Gas)FMF Factory 4. 1 RCT Complete System (GasGas) The FMF Factory 4. 1 RCT Complete System is built for GasGas riders who want stronger power, a lighter feel, and cleaner throttle response across the entire RPM range. Using FMFs latest Resonance Chamber Technology inside and outside the canister, this system controls sound while improving flow, giving you a noticeable performance boost without excess noise. The shorter muffler design works with FMFs

FMF – Factory 4.1 RCT Complete System (GasGas)

The FMF Factory 4.1 RCT Complete System is built for GasGas riders who want stronger power, a lighter feel, and cleaner throttle response across the entire RPM range. Using FMF’s latest Resonance Chamber Technology inside and outside the canister, this system controls sound while improving flow, giving you a noticeable performance boost without excess noise. The shorter muffler design works with FMF’s Factory Forward Engineering, keeping the weight tucked in tight to the engine for better balance and less chance of damage in a crash. It’s built from aerospace-grade materials and manufactured start-to-finish in FMF’s Southern California facility.

Why We Like It

It gives GasGas four-strokes a more responsive feel without making the bike overly loud. The mass-centralized design makes the bike handle lighter, and the Megabomb header adds smooth, usable power everywhere. The construction is clean, durable, and very “factory”—a top-tier exhaust setup that fits and performs exactly how it should.

Why It’ll Work for You

If you want stronger low-to-top power and a lighter, more balanced feel, this system makes an immediate difference. The patented chamber and canister designs increase flow and manage sound better than a standard slip-on, while the shorter length helps keep your exhaust out of harm’s way. It bolts on easily, works with tuning inserts or a spark arrestor, and is optimized specifically for GasGas engines.

Key Features

  • Latest FMF Resonance Chamber Technology (internal + external)

  • Patented core shape reduces sound while maintaining maximum power

  • Patented canister shape increases internal volume for better sound absorption

  • Patented chamber design refines exhaust pressure and improves flow

  • Factory Forward Engineering for mass centralization and reduced crash damage

  • Application-specific tuned exhaust core

  • Rear endcap accepts tuning inserts or spark arrestor

  • Includes Titanium Megabomb header for optimized power output

  • Carbon fiber end cap

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 21471959928

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Ksenia
Houston, US
★★★★★ 5
Great fit and very convenient for active babies
Size: Size 4, Unit Count: 64, Size: Size 4, Unit Count: 64
These diapers are a great option, especially for active babies. The 360 design makes them easy to pull on and off, which is really convenient during quick changes. They fit well without feeling too tight and provide good coverage. Absorbency is solid, keeping things dry for a good amount of time. The material feels soft and comfortable on the skin. I also like how easy they are to dispose of after use. Overall, a reliable and convenient choice for everyday use.
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Reviewed in the United States on April 8, 2026
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sheilam
Lexington, US
★★★★★ 5
Good product
Size: 9 Count (Pack of 1)
My dog loves these treats! Limited ingredients, which is why I purchased them. They are a good size for my small dog. Since it has limited ingredients ts healthy
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Reviewed in the United States on May 15, 2026
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PLI
Waukegan, US
★★★★★ 5
Our pups' absolute favorites!
Size: 9 Count (Pack of 1), Size: 9 Count (Pack of 1)
Our two little rescue dogs Molly and Layla are very, very, very picky. However, these lamb strips are their ABSOLUTELY favorite treat. They have other favorites, but sometimes aren't in the mood for one or another. But this one-- never! If they see the bag, but I try to give them something else, they both just look at me as if to say, "Forget that. Give us the really good stuff, Mom!" They aren't cheap. So, I ration them out. It's not a daily thing. That keeps them special, too. Here they are in the photo, waiting patiently to get one of these lamb strips from me.
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Reviewed in the United States on February 14, 2024
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Amazon Customer
West Palm Beach, US
★★★★★ 5
Pet treats
Size: 9 Count (Pack of 1)
Great product
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Reviewed in the United States on November 2, 2025
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J. Ortiz
Belleville, US
★★★★★ 5
Repeat buy
Size: 9 Count (Pack of 1)
My dogs go crazy over these. I am a repeat buyer and I recommend to other dog owners
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Reviewed in the United States on October 4, 2025

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