4-2 Exhaust Silencer Kit Fits: Kawasaki Z1000 ZR1000 A1H A2H A3H/A6F 2003-2006 - Designed to fit the OEM headers. - Replaces the heavy OEM muffler/silencers. - Louder with improved gas flow. - No modifications required. (Re-mapping, Power commander) - Silencer mounting straps and clamps included. - Link Pipe Material : 304 Grade Black Stainless Steel. - Silencer Material : 304 Grade Black Stainless Steel. - Body Length excluding tips = 300mm - Body Diameter = 110mm - Silencer Code: BN30R - Baffle / DB killer are removable. - See our Silencer Specifications Tab for length noise levels. - Two year Black Widow warranty.