SKU: 40639748632

FMF - Factory 4.1 RCT Complete System (Kawasaki)

Sale price$18871.20 Regular price$20968.00
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

FMF - Factory 4.1 RCT Complete System (Kawasaki)FMF Factory 4. 1 RCT Complete System (Kawasaki) The FMF Factory 4. 1 RCT Complete System brings championship level performance, power, and precision engineering to your Kawasaki. Designed with FMFs exclusive Resonance Chamber Technology (RCT) both inside and out, this system smooths exhaust pressure, boosts power across the rpm range, and cuts sound levels all while delivering that crisp, unmistakable FMF tone. FMFs Factory Forward Engineering moves

FMF – Factory 4.1 RCT Complete System (Kawasaki)

The FMF Factory 4.1 RCT Complete System brings championship-level performance, power, and precision engineering to your Kawasaki. Designed with FMF’s exclusive Resonance Chamber Technology™ (RCT) both inside and out, this system smooths exhaust pressure, boosts power across the rpm range, and cuts sound levels — all while delivering that crisp, unmistakable FMF tone.

FMF’s Factory Forward Engineering moves the muffler closer to the motor, centralizing mass for improved balance and handling. The shorter overall length helps prevent crash damage, while the patented canister shape increases internal volume, allowing more sound-absorbing material without restricting flow. Built entirely from aerospace-grade materials and handcrafted in Southern California, the Factory 4.1 RCT is made to perform, look, and sound like a true factory system.

Why We Like It:
It’s FMF’s top-shelf system for good reason — lighter, stronger, and noticeably more responsive. The titanium build and carbon end cap look straight off a race bike, and the sound is pure FMF: clean, deep, and aggressive without being obnoxious.

Why It’ll Work for You:
This system gives your Kawasaki more usable power and a smoother throttle feel from low rpm to wide open. The improved flow helps the engine breathe easier, while the mass-centralized design keeps the bike stable and responsive. Plus, the included 94dB insert lets you fine-tune sound for different tracks or trails.

Variants / Options:
Includes complete header, mid-pipe, and muffler assembly. Compatible with optional spark arrestor and tuning inserts.

 

Key Features:

  • Latest FMF Resonance Chamber Technology™ (RCT) for balanced flow and power

  • Patented core shape lowers sound without sacrificing output

  • Patented canister design increases internal volume and durability

  • Factory Forward Engineering improves mass centralization and handling

  • Titanium and carbon fiber construction for strength and weight savings

  • Innovative rear end cap for easy insert and spark arrestor changes

  • Tuned core specs for each specific model application

  • Includes 94dB insert for sound compliance

  • Handcrafted in Southern California, USA

 

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: 40639748632

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4.8 ★★★★★
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Mdc3ff33
Dallas, US
★★★★★ 5
Good buy
Size: 6 in, Color: Blue
A winner with our GSD. He’s not a super aggressive chewer but it has still held up and is a favorite.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
N
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NO-BULL---- john
Lowell, US
★★★★★ 5
Terrific toy for heavy chewers
Size: 6 in, Color: Blue
My dog loves this! Chews and plays with it constantly. These will last a long time, however, eventually they begin to break down. THEN GET ANOTHER, lasted a couple months with constant chewing.
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Reviewed in the United States on August 29, 2025
C
Verified Purchase
CJB
Lexington, US
★★★★★ 3
My dog doesn't like it
Size: 5 in, Color: Orange
My dog wasn't a fan of this at all. He was curious about it, probably because he could smell it, but he wasn't sure about chewing it. It could be because his teeth squeak against it? Or maybe it has an odd texture? I don't know But this has sat in the toy bin untouched since the day we got it
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Reviewed in the United States on October 13, 2025
E
Verified Purchase
Exactly as described on Amazon works perfectly great quality in product and pictures.
Waukegan, US
★★★★★ 4
Not for older dogs
Size: 6 in, Color: Blue
Item was on point as described, but my elderly dog was not interested.
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Reviewed in the United States on March 2, 2026
D
Verified Purchase
De Marby Reviews
Waukegan, US
★★★★★ 5
Great Chew Toy for Daily Play
Size: 6 in, Color: Blue, Size: 6 in, Color: Blue
My dog absolutely loves this toy. From the first moment he grabbed it, he wouldn’t stop playing with it. He chews on it, runs around with it, and even sleeps with it sometimes. What I like most is how durable it is — even with constant biting, pulling, and chewing, it hasn’t broken or shown any damage. The material feels strong but still safe for him to chew. The texture also seems to keep him entertained because it massages his gums while he plays. It’s lightweight, easy for him to carry, and the shape makes it fun for both chewing and tossing. This toy has become one of his favorites, and I’m really happy with the quality. I would definitely recommend it for dogs who love to chew.
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Reviewed in the United States on November 19, 2025

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