Yana Shiki A2872ABLRC 4"-6" Billet Swingarm Extension for Kawasaki Kawasaki ZX600 Ninja ZX6-RR 98-12, ZZR 600 2003-2007, ZX-636 2003-2008, & ZX900 Ninja ZX-9R 2000-2003 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.