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YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 1YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 2YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 3YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 4YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 5YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 6YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 7YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 8YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 9YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler
Product image 10YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler

*Product may vary by application

YZ450F 23-24 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler

SKU: 234840S320

Sound Insert/Spark Arrester Options


Regular price $1,019.00

MADE IN USA

Signature Series Exhaust System

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1-YEAR
Warranty

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Same day shipping on In Stock items placed Mon-Fri by 1:00 pm PST. Please contact sales@yoshimura-rd.com for ETA's on Reserve Now / Pre-Order Items.


Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"


WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov


The mighty Yamaha YZ450F is practically all new for 2023 and ready to inspire new MX champions everywhere.

Lets get right to it...the stock system on the Yamaha YZ450F was hard to improve, but we did! The magic of the right tube diameter, right length then our RS-12 was called in to do the work that it was designed to do...perform! Adding power and torque everywhere across the spectrum of the new YZ450 wasn't easy but it was accomplished. Max HP is increased by 8% and max torque is bumped an incredible 13%!

The new RS-12 system unlocked some key power in the right places. The lower and mid RPM range is really enhanced while not disrupting the handling characteristics on the new YZ chassis. Riding with this new added power really made testing the new system a fun project.

Other highlights of the RS-12 system are the machined joints on the key tube junctions to insure a good clean interface between joints. A built in resonator chamber on the muffler, a matte carbon fiber end cap and a PTF low volume sound insert completes the RS-12.

Spark arrestor sold separately.

The RS-12 proudly designed, developed and made in the USA.

Sound Insert/Spark Arrester Options                 
​​
Sound Level
Volume Insert Spark Arrestor Included
INS-38-K
Yes
INS-32-K
No


SA-19-K No 

  

. . . . .

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.

Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

Vehicle Fitment

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  • Yamaha YZ450F 2023
  • Yamaha YZ450F 2024


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    Race series product restriction and affirmation

    Warning:

    The RACE SERIES product you are purchasing removes, renders inoperative, or bypasses required elements of the emission control systems of EPA, certified motorcycles of motorcyle engines and may only be installed on motorcycles that are restricted to closed course competition. Installation of this product on a motorcyle that is ridden on a public street, highway, or public lands violates the tampering and defeat device provisions of the Clean Air Act & 203(a)(3)(A) and/or & 203(a)(3)(B) and may subject you to a civil penalty of up to $37,000.

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    2. that any information I have entered is accurate; and
    3. that any motorcycle on which I install the RACE SERIES product will be restricted to closed course competition and will not be ridden on any public street, highway or public lands.