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CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 1CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 2CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 3CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 4CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 5CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler
Product image 6CRF450R/RX 2021-2024 RS-12 Stainless Slip-On Exhaust, w/ Stainless Muffler

*Product may vary by application

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

SKU: 225852S320

Sound Insert/Spark Arrester Options


Regular price $789.00

MADE IN USA

Signature Series Exhaust System

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Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"


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


The most anticipated 450cc motocross bike for 2021 is here! With an all-new designed chassis and engine, the new Honda CRF450 is sure to set new records.

Our new RS-12 system for the new Honda CRF450 has been in development for over a year, no stone has been left unturned in our efforts to innovate and create the best exhaust system available. In collaboration with Honda Japan, HRC Honda and MXGP World Champion Tim Gajser, we were able to deliver!

The Yoshimura RS-12 and the 2021 Honda CRF450—made with one goal to provide the most precision tuned machine in motocross competition.

  • Developed and tested in collaboration with HRC Honda Racing World Champion Tim Gajser and engineers the new RS-12 is ready for the race track and trails.
  • 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.
  • Unique oval manifold design was created using FEA process (Finite Element Analysis) and produced using state-of-the-art hydroforming process
  • Improved performance gains, weight reduction and fit when compared to previous generation design
  • 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
  • Works-look matte carbon fiber end cap with industry leading design and innovation end cap detailing as expected from Yoshimura
  • Carbon end cap covers inner cap mounted design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry
  • New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters
  • Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralization without sacrificing performance
  • Proudly designed, developed and made in the USA!
  • Repack Kits, optional Inserts and Spark Arresters are available for all models

Sound Insert/Spark Arrester Options                 
​​
Sound Level
Volume Insert Spark Arrestor Included
INS-32-K
Yes
INS-34-K No


SA-21-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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  • Honda CRF450R 2021
  • Honda CRF450R 2022
  • Honda CRF450R 2023
  • Honda CRF450R 2024
  • Honda CRF450RX 2021
  • Honda CRF450RX 2022
  • Honda CRF450RX 2023
  • Honda CRF450RX 2024


  • Customer Reviews

    Based on 1 review
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    (1)
    A
    Andre Spaca Di Paolo
    Sounds amazing but way too heavy

    Unfortunately today I had change to compare the mufflers and got really frustrated.
    Bike crf 450rx 2022
    Original muffler- 2.7kg
    Yoshimura rs12- 3.5kg

    Both parts are new, no oil or grease, no wet, no missing parts.
    Really disappointed and definitely not installing Yoshimura to my bike

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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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    Affirmation

    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.