Yana Shiki A2884LRC 4"-6" Billet Swingarm Extension for Honda CBR 600RR Honda CBR600RR 2003-2004 Our bolton swingarm extensions are an easy bolt on & made of billet aluminum. Available in Silver, Black or Chrome Adjustments vary by model but range from 4"10" Brake hanger included if required An extended brake line & chain are required to complete installation. all sold separate.