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 Aug 17 - Aug 22

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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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4.7 ★★★★★
Based on 28 reviews
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A
Amazon Reviewer 💖
Whiting, US
★★★★★ 5
Surprisingly strong cooling effect and really comfortable
Size: Queen (90" * 90"), Color: Luxury Grey, Size: Queen (90" * 90"), Color: Luxury Grey
This comforter honestly impressed me more than I expected. The cooling effect is very noticeable right away. Like actually noticeable, not just one of those things brands say. When you first touch it, it feels cool to the skin and that feeling sticks around instead of fading instantly. I’ve been using it at night and it definitely helps with overheating. I tend to get cery hot when I sleep, also I’m pregnant right now so that makes it even worse, and this has made a difference. It feels lightweight but still cozy enough that it doesn’t feel like you’re just using a thin sheet. The fabric is really soft and smooth, also it lays nicely on the bed without feeling stiff or bulky. It gives that clean, almost silky feel without being slippery. One thing to keep in mind is it’s not a super thick comforter, but i will say there is some heft to it. Like if i wrap myself around in it, it has some weight to it. Overall, I’m really happy with it. It actually does what it claims with the cooling, and it’s comfortable enough for everyday use. Great option if you’re a hot sleeper or just want something lighter and refreshing at night.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
M
mnvikings
Chelsea, US
★★★★★ 5
I love this comforter! It is so silky soft, feels so nice to sleep under.
Size: King(103“*90”), Color: Luxury Grey, Size: King(103“*90”), Color: Luxury Grey
I absolutely love this comforter! It is super lightweight and has a very silky soft shell on both sides. It feels so good to sleep under! Ever since I have been using it, I haven't been waking up in sweat covered sheets. It constantly has a cool feel to it 24/7. It is large enough that it fits my king size bed pretty good. It doesn't hang far over the edges, but it fits. It is dual sided, so you can have a light gray look on one side and a dark gray look on the other side, depending on what fits your decor better. I definitely recommend getting if you are on the lookout for a cooling comforter, especially because of the silky soft feel.
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Reviewed in the United States on May 11, 2026
J
J
Belleville, US
★★★★★ 5
It really cools - Extremely soft - Not too heavy
Size: Queen (90" * 90"), Color: Luxury Grey, Size: Queen (90" * 90"), Color: Luxury Grey
This comforter arrived packaged very well from the manufacturer. It arrived sealed in plastic inside a box. The color and appearance of the comforter received looks like what was shown in the listing. This comforter is extremely soft. It feels very cool to the touch. It has a great cooling effect. It is also not too heavy. A lot of cooling bedding products like this feel heavy. While this does have some weight it is not too much. It is easy to move around. The comforter is easy to refresh and cool off again after extended use. I just uncovered myself, lifted and moved the comforter around a little, then covered back up. This made it feel cooler again. I am very happy with this comforter so far. I like the color and design. I really like feeling cool when falling asleep. This will be great when the temperatures start going up. I will update this review later if anything changes after washing a few more times and longer use. I think this will be a good comforter for most hot sleepers who like to cover up all year.
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Reviewed in the United States on April 18, 2026
L
Lynelle
Grantham, US
★★★★★ 5
Feels seriously amazing!
Size: Twin(90“ * 67”), Color: Luxury Grey
This is my second cooling comforter from this brand and this one is just as amazing as the first. It’s silky soft and makes a significant temperature difference. It’s like magic; you don’t need to do anything special to cool it before bed. If you do want extra coolness, you can place it in front of your AC or turn on your fan for a little bit before bed and It absorbs the extra coolness but either way it lasts all night. I use it with the cooling pillow, and the hot summer nights are no match. It’s easy to wash, really silky, smooth, and actually cool against the skin. It also somehow has a weighted blanket-like feel without being heavy. I standby this blanket so much that this is my second one, highly recommend!
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Reviewed in the United States on May 5, 2026
M
Verified Purchase
Mopardodgegirl
Pawtucket, US
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026

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