SKU: 70024307397

YOSHIMURA RS-12 Volledig uitlaatsysteem Signature Series

Sale price$680.27 Regular price$755.86
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  • USA
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

YOSHIMURA RS-12 Volledig uitlaatsysteem Signature SeriesThe 2024 Kawasaki KX450 has undergone a ton of changes, one of them requiring an all new exhaust system. We were eager to develop the best exhaust system possible for the new Green Machine. Working with multi time GNCC off road Champion Steward Baylor we were able to really squeeze every ounce of performance from the new KX. Not only performance but installation on the new KX has been optimized. Working around the new KX chassis we were able to make

The 2024 Kawasaki KX450 has undergone a ton of changes, one of them requiring an all-new exhaust system. We were eager to develop the best exhaust system possible for the new Green Machine.

Working with multi-time GNCC off-road Champion Steward Baylor we were able to really squeeze every ounce of performance from the new KX. Not only performance but installation on the new KX has been optimized. Working around the new KX chassis we were able to make the new oval-port header fit effortlessly.

Performance gains are massive with our RS-12 Signature Series system, adding a whopping 23.8% max hp and an incredible 16.4% max torque. With gains like this some would think that the new KX would be hard to control, not the case. With the help of our hydroformed oval header, our development team has made the power delivery much smoother than stock!

Our RS-12 muffler has loads of features including our PTF insert system that makes changing inserts a breeze and an optimized muffler shape with added volume and brake caliper clearance. Optional spark arrestor SA-21-K available separately.

Yoshimura's RS-12 systems proudly designed, developed and manufactured in Chino, California.
  • Rubber mounted RS-12 muffler dampens vibration to subframe
  • Aggressive intelligently designed, the RS-12 asymmetrical shaped muffler allows maximize capacity and incorporates a resonance chamber for managing sound and increasing usable power. RS-12's unique profile also provides more clearance for tire and brake caliper.
  • Improved performance gains with refined power delivery.
  • Just like the works systems our Factory Racers use, RS-12 systems utilize precision machined joints. Machined joints provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface which translates into improved system life, fit and performance.
  • New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters.
  • Works-look matte carbon fiber end cap with industry leading design, innovation and detailing as expected from Yoshimura.
  • Carbon end cap covers the RS-12 inner cap, thus improving looks, while providing easier service as compared to other sandwich mounting designs most commonly found in the industry.
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: 70024307397

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4.8 ★★★★★
Based on 23 reviews
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C
Verified Purchase
Chaz
Chelsea, US
★★★★★ 4
good chair for price
Color: Black Full Mesh, Style: Executive
I have had for about 2 months and seems to be holding up well, so far, and is comfortable for most part. Only complaint is the arms do not lower a lot, so cannot go under the desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
J
Verified Purchase
JFH
West Palm Beach, US
★★★★★ 5
High quality and incredible customer service
Color: Black Full Mesh, Style: Executive
This is an extremely well made chair at a very competitive price. The packaging, assembly instructions, as well as the way the hardware was packaged and labeled is probably the best I've seen. I'm particular about tools, and the included allen wrench was better than the normal "included tools" so much so that i actually used it rather than one of my own. The assembly was easy, and the chair itself looks and feels very high quality, and is very comfortable. Perhaps best of all was the level of customer service. I emailed on a weekend to activate the warranty and request the free cushion they offer. I got a personal response in less than a day and they offered upgraded wheels for free as well. This is a company worth doing business with.
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Reviewed in the United States on April 5, 2026
M
Verified Purchase
M. T.
Massapequa, US
★★★★★ 5
Excellent chair/great support.
Color: Black Full Mesh, Style: Executive
Excellent, comfortable chair! I was surprised at how easy it was to assemble---but the directions were super clear and all the pieces and parts were labeled. Once I received the chair, I was also surprised with the email follow up from Alice at Molents. All this for a reasonably priced chair.
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Reviewed in the United States on April 1, 2026
R
Verified Purchase
Rob
San Leandro, US
★★★★★ 5
Great Chair and Outstanding Customer Service
Color: Black Full Mesh, Style: Executive
I desperately needed a new office chair. I ordered this chair with the mesh seat and it spike up my sciatica. I reached out to the company and Alice took great care to address the issue. She sent me a new seat with a foam cushion and it resolved the issue immediately. The chair is incredibly comfortable with the lumbar support, adjustability and foot support. She also sent me upgraded wheels as my chair is on a thin chair mat on hard wood floors. Alice was extremely responsive with possible options and very thorough with instructions on how to replace the seat. It is a high quality chair that I anticipate will last me quite some time. I highly recommend this company and will definitely order products from them again should the need arise. Thank you, Alice!!
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Reviewed in the United States on June 10, 2026
S
Verified Purchase
Scott G
Omaha, US
★★★★★ 5
Great value and great customer experience
Color: Black Full Mesh, Style: Executive
I'm sure there are a lot of high quality chairs out there and this is one of them. For me, what sets this one apart is the customer experience from unboxing and assembly to customer care. The chair came in a surprisingly small box. To my surprise, the parts were wrapped in foam and then again in a high quality foil/foam packing material. Everything was well protected, densely packed, yet easy to unpack and locate the parts. The assembly process was straight forward as you might expect, but the attention to detail is remarkable. For example, the screws have thread lock (a dab of the blue "goo" to keep them from coming loose). Another example is the Allen wrench they give you. It isn't a cheap L-shaped wrench. It's a T-bar with a good sized handle. The parts all have slotted screw holes to give some tolerance in lining up the screws and a little bit of adjustment room. The instructions even showed how to use the box as a bench of sorts. You can tell the designers really thought about the assembly process. The chair came with a tag offering a free "upgraded foam seat protector cover" by sending them an email. Not only did they send one, the email response was from a human (I'm 99% positive) that asked how I liked the chair. I honestly responded that I like the arms to go down lower than this chair allows and said I might modify it. We exchanged a few messages about it and they ended up sending me some washers/spacers. It now fits my frame perfectly. Not only that, they offered to send me a different set of wheels that are more suitable for my flooring, which I took them up on. I didn't even ask! In summary, I am extremely happy with this chair and the company I bought it from. It is a fantastic value.
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Reviewed in the United States on May 18, 2026

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