FMF Turbine Core II Silencer - Fits: Honda CR85R 2003-2007 USFS approved spark arrestor built-in and Exclusive FMF Turbine Core Dampening System Straight through arrestor design does not restrict exhaust flow Refines power on track and trail and Lighter than OEM silencers Non-removable spark arrestor and Aluminum alloy canister body Stainless end cap and mid pipe and Performance Flo endcap. FMF's most popular spark arrested silencer