Yoshimura RS-4 Signature Series Dual Full System - Carbon Fiber Muffler 116600D220The 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