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So that we may help you find the right exhaust for your application, we have created the Emission Compliance Guide. An up-to-date comprehensive guide to navigate you through the sometimes complex world of "Is this system ok to install on my vehicle?" as it pertains Yoshimura exhaust.

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We have created four different categories to help you understand what system is best for the specific application. If it's green, you can install without any issues. If it's red, it's a racing system only!


Yoshimura Signature Series Icon

Introducing Signature Series by Yoshimura - an offering of exhaust systems that a dealer can install with confidence. Our Signature Series lineup is the answer for today's dealer who is faced with a challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many of our off-road applications. Every one of our Championship Winning Motocross exhaust systems and nearly all of our ATV/Side-by-Side applications are members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.

Yoshimura Street Series Icon

All Street Series systems are Slip-on/Bolt-on applications that do not require tampering with the vehicle's emissions control system, yet still deliver that special spirit the world has come to expect from the legendary company known as Yoshimura. Street Series applications cover all of the iconic profiles that Yoshimura has become famous for. From the legendary tri-oval profiles to the refined carbon fiber R-77 mufflers, and even our Alpha Taper angular masterpieces. Our Street Series exhaust offer street-legal options for almost everything on two wheels.

Yoshimura Speed Series Icon

All Speed Series systems are exhaust system applications that do not decrease your street bike’s emissions system performance Plus is 49-state street legal, yet still deliver extra power and that special spirit the world has come to expect from the legendary company known as Yoshimura. FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE in California.

Yoshimura Enduro Series Icon

In the Mid 90's, Yoshimura didn't go to the dirt... the dirt came to Yoshimura. Enduro Series systems are an evolution of Yoshimura's early off road efforts crafting off-road exhaust systems. The Enduro Series are all equipped with USFS-approved spark arrester, forest-friendly noise levels, and are tailpipe emissions compliant.

Yoshimura Race Series Icon


If you're looking for that competitive edge, look no further than our Race Series. These exhaust systems are designed with nothing but power in mind. Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide.


If you would like more information regarding Emission Compliance regulations, click on the button below:


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Race series product restriction and affirmation


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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Race Information

Rider/Purchaser Information


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.