These gaskets are roughly 30% thicker than the standard gasket which helps to seal problematic exhaust leaks at the port. Stainless Steel Tapered Wire Mesh Crush Style Gasket Designed for use with Spherical Exhaust Ports. Fits 1984-2024 Harley Big Twin EVO/Twin Cam/M8 Touring, Softail, Dyna, FLH, FLT, FXST, FLST, FXD, FXR, FX/FL & 1986-2024 Sportster XL EVO 883/1100/1200cc Models (Not 1250/975 Models). Replaces Harley Part #'s 65324-83, 65324-83A + 65324-83B SOLD AS A PAIR Dimensions: OD - 1.92", ID - Tapered ID, Top to Bottom - .38”