Yoshimura - RS-4 Full System (Suzuki)
SKU: 45725917219

Yoshimura - RS-4 Full System (Suzuki)

Sale price$280.78 Regular price$311.98
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Yoshimura - RS-4 Full System (Suzuki)Yoshimura RS 4 Signature Series Full System (Suzuki) Built straight from Yoshimuras racing pedigree, the RS 4 Signature Series Full System gives Suzuki riders that factory level performance, sound, and style. Designed to pull harder out of the gate and add torque throughout the rev range, the RS 4 helps your RM Z450 launch strong, hook up clean, and pull longer down the straight. Its a complete system engineered to win lighter than stock, smoother

Yoshimura - RS-4 Signature Series Full System (Suzuki)

Built straight from Yoshimura’s racing pedigree, the RS-4 Signature Series Full System gives Suzuki riders that factory-level performance, sound, and style. Designed to pull harder out of the gate and add torque throughout the rev range, the RS-4 helps your RM-Z450 launch strong, hook up clean, and pull longer down the straight. It’s a complete system engineered to win — lighter than stock, smoother through the midrange, and tuned for that deep Yoshimura growl that makes a four-stroke sound just right.

The RS-4’s pentagonal canister isn’t just for looks — it houses Yoshimura’s Polyresonant Duplex Chamber and stepped baffle design to control noise while boosting power. A stainless steel header and carbon fiber end cap give it a clean factory finish that can take real abuse. And if you want to cut even more weight, Yoshimura offers titanium versions that look as good as they perform.

Why We Like It:
You can feel the race DNA in this system. Throttle response snaps to life, the midrange torque feels meatier, and it still keeps sound levels smart and clean. The RS-4 gives your Suzuki that pro-level punch without making it harsh or high-maintenance — just smooth, reliable power that hits right when you need it.

Why It’ll Work for You:
This system transforms how your bike builds power — smoother off the bottom, stronger through the mid, and more drive when you twist it wide open. The Polyresonant Chamber controls sound without killing flow, while the stepped baffle helps your RM-Z pull harder through every gear. It’s a true race-bred setup that delivers consistent performance, lighter weight, and that unmistakable Yoshimura tone — refined, powerful, and ready for the gate.

 

Key Features:

  • Pentagonal-shaped muffler sleeve for unique factory styling

  • Front muffler cap functions as a Polyresonant Duplex Chamber to reduce noise

  • Two-stage stepped baffle for improved torque and throttle response

  • Carbon fiber end-cap with Yoshimura race design

  • Available in three configurations:

    • Stainless header / Aluminum can / Carbon End Cap

    • Titanium header / Titanium can / Carbon End Cap

    • Titanium header / Carbon can / Carbon End Cap

  • Lightweight design saves pounds over stock

  • Dyno- and race-tested for proven performance gains

 

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: 45725917219

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Mr. Wordy
Bozeman, US
★★★★★ 5
It's tough!
This chew toy has held up well. Yes, the squeaker did succumb eventually. Yes, my dog was able to eventually chew pieces from it. However, it has lasted longer than any other chew toy we have purchased other than the Nylabone type. I even bought several for family members who have dogs.
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Reviewed in the United States on August 26, 2025
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Storm X
Lowell, US
★★★★★ 4
A bit heavy, so mind the sizing. Good though.
My dog is a relentless chewing Jock. He's 11 lbs of Chi X and runs and chews until he's exhausted. I got the 6" for him and it's a bit heavy. He already unraveled and ate the string tape, so I braided and knotted it. He likes it when I can get him to chase it. I'd get a 4" if I were to do it again. It's a great well made product that really let's him get a good chew on.
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Reviewed in the United States on May 22, 2026
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Verified Purchase
CherryHill
Waukegan, US
★★★★★ 5
Pup’s new favorite chew toy!
My son let one of my pups have a corn cob, which my dog enjoyed immensely. However, son got scolded as these can be very dangerous to dogs, and I disappointed my pup by taking it away. I went to Amazon to see if, by chance, a dog toy existed that was a corn cob. And there we found this- the new favorite of MANY chew toys for my medium size aggressive chewers. I bought two, one for each. They enjoyed “tug-a-war” due to the handy rope end. It squeaks. It’s strong and well made. It’s by far their favorite chew toy. I did store them in the fridge prior to giving them and pretended to eat them to make the pups think they were “real”. The package says they are dog toothbrushes, so a good benefit there as well. I’m sure we will be getting these regularly.
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Reviewed in the United States on June 2, 2025
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nancy hahn
Battle Creek, US
★★★★★ 1
Quality
I have a 5 lbs puppy. Within 5 minutes of giving him this toy he had pieces of the rope chewed off and in his mouth. Needless to say,into the garbage it went. Disappointed
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Reviewed in the United States on April 24, 2026
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Verified Purchase
Will
Chelsea, US
★★★★★ 5
Great Chew Toy for our 50 pound dog
Really great chew toy. Our 50 pound dog loves it. We play fetch with it. Very sturdy and easy to chew.
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Reviewed in the United States on March 1, 2026

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