SKU: 55629752217

FMF - Factory 4.1 RCT Slip-On Exhaust (Ducati)

Sale price$280.80 Regular price$312.00
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

FMF - Factory 4.1 RCT Slip-On Exhaust (Ducati)FMF Factory 4. 1 RCT Slip On Exhaust (Ducati) FMFs Factory 4. 1 RCT Slip On gives Ducati riders a true factory built exhaust with real gains in power, throttle response, and overall rideability. Using FMFs latest Resonance Chamber Technology, the 4. 1 RCT smooths exhaust pressure, cleans up the powerband, and keeps sound levels controlled without restricting performance. The shortened canister design improves durability in tip overs, and FMFs Factory

FMF – Factory 4.1 RCT Slip-On Exhaust (Ducati)

FMF’s Factory 4.1 RCT Slip-On gives Ducati riders a true factory-built exhaust with real gains in power, throttle response, and overall rideability. Using FMF’s latest Resonance Chamber Technology™, the 4.1 RCT smooths exhaust pressure, cleans up the powerband, and keeps sound levels controlled without restricting performance. The shortened canister design improves durability in tip-overs, and FMF’s Factory Forward Engineering moves the muffler closer to the engine to centralize mass and sharpen handling.

The system is built from aerospace-grade materials — with a titanium canister and mid-pipe on Ti RCT models, or an aluminum canister paired with a stainless mid-pipe on Aluminum RCT versions. Both options deliver significant weight savings and long-term durability. The patented core and canister shapes increase internal volume, allowing for more sound-absorbing material while maintaining strong power output through the entire rpm range. FMF’s new Rapid Tuning System (RTS) makes insert and spark arrestor swaps quick and simple, adding serious versatility to an already premium system.

Why We Like It

This slip-on gives Ducati a stronger, cleaner pull in the low to mid range, and the titanium construction trims weight in a way you actually feel on the bike. The overall tone stays deep and controlled, the hit is smoother, and the compact canister keeps the rear end looking tight and race-ready. It’s a factory-level upgrade that feels refined on every ride.

Why It’ll Work for You

You get real performance gains without the complexity of a full system. The 4.1 RCT improves throttle response, adds usable power everywhere, and keeps noise reasonable for places with sound checks. The lightweight build makes the bike more responsive, and the resonance chamber helps maintain smooth, predictable power in technical terrain or fast track riding. If you want a slip-on that improves performance, sound, and durability all at once, this one does it.


Key Features

• Latest Resonance Chamber Technology™ for smooth power and controlled sound
• Patented core shape maintains power while lowering noise levels
• Patented canister shape increases internal volume for better sound absorption
• Tuned chamber design refines exhaust pressure and overall power delivery
• Factory Forward Engineering centralizes mass and reduces crash vulnerability
• Optimized core specs tailored to each model application
• Innovative rear end cap allows easy tuning tip or spark arrestor installation
• Ti RCT version: titanium canister and titanium mid-pipe
• Aluminum RCT version: aluminum canister with stainless steel mid-pipe
• Includes spark arrestor and wash plug
• Rapid Tuning System (RTS) for quick maintenance and insert changes
• Shorter overall design helps prevent crash damage
• Handcrafted in Southern California
• Closed-course use only

 

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: 55629752217

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4.2 ★★★★★
Based on 18 reviews
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J. Randle
Phoenix, US
★★★★★ 5
Love them
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I wear a size 11.5 in ladies shoe and these just barely fit. Butttt after I put lotion on my feet and slipped these on and left them on for about 30 mins. It left my feet really soft! They work great as intended. Would buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
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Verified Purchase
Vonda Kioultzopoulos
Alexandria, US
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
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Reviewed in the United States on September 20, 2025
T
Verified Purchase
Tessy
Bozeman, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
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Reviewed in the United States on April 22, 2026
M
Verified Purchase
Ms. Mac
Chelsea, US
★★★★★ 5
Just as good as paraffin wax
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
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Reviewed in the United States on April 9, 2026
S
Verified Purchase
SKI
Belleville, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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Reviewed in the United States on April 25, 2026

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