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Product image 1CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 2CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 3CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 4CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 5CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 6CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 7CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 8CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 9CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 10CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 11CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 12CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 13CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 14CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 15CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 16CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 17CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 18CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Product image 19CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler

*Product may vary by application

CRF450R/RX 2021-2024 RS-12 Stainless Full Exhaust, w/ Stainless Muffler

SKU: 225850S321


Regular price $1,049.00

MADE IN USA

Signature Series Exhaust System


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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 #1 exhaust in Supercross and Motocross that powered Chase Sexton to the 2023 450 Supercross title, and Jett Lawrence to the 2023 450 Motocross SMX title and perfect season!

In our never ending pursuit to craft the very best exhaust system, Yoshimura introduces the latest RS-12 stainless steel system for the Honda CRF450R/RX.

Why did we go through the task of introducing a whole new system for the CRF450? With the latest engine spec, our engineers wanted to get the best most usable power from this new model. This new system incorporates a one-piece stainless steel cast manifold featuring an integrated bolt flange surface that is 3x stronger than conventional designs.

This new system has been developed with - and is the closest thing to what 5x World Champion Tim Gajser, Chase Sexton, Jett Lawrence have been using to grab holeshots and win championships. By increasing the resonator in the RS-12 muffler by 50cc (a 14% increase) and adding a second resonator to the header, our engineers were able to unlock some insane usable power from this new and improved system.

The new RS-12 system adds 5% max hp and 6.5% max torque to the new engine spec with its smaller throttle body and different ECU settings.

What does this translate to?

  • Easier power delivery
  • Smoother frontside torque
  • Allows the rider to ride in an higher gear, thus freeing up suspension.
  • Less rider fatigue

Yoshimura's RS-12 is proudly designed, developed and manufactured in Chino, California.

. . . . .

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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  • Honda CRF450R 2021
  • Honda CRF450R 2022
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  • Honda CRF450R 2024
  • Honda CRF450RX 2021
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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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    By clicking below, I affirm:
    1. that i have read the above warning;
    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.
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