Yoshimura RS-3 Signature Series Slip-On Exhaust 12111E5500 The Signature Series lineup is the answer for todays dealer who is faced with a challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many off-road applications. All Signature Series components are tested, documented, and marked as required by federal and state regulations. CARB/EPA tail-pipe emissions compliant All applications are marked with appropriate EPA noise emissions labels