Akrapovic Optional Headpipe Kit for Slip-On Exhaust Series S-H25R1/1 Optional available headers from the finest materials offer an upgrade to a full system when used with the Akrapovic Slip-On exhaust system. Let your bike stand out with more power, beautiful design, and the unique Akrapovic sound. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE. Exhaust system cant be mounted on Honda CBR 250 R 2014-2015 model sold in Japan.