The outside diameter is 1

An adapter ring is included that allows V-Factor rotors to be run on wheel hubs that accept either 1

larger padded backrest

stripped down to the bare assentials

Chrome plated oil pump mounting acorn nut screw kit fits 1977-1990 Sportster

Chrome Steel Front Brake Tee with Fittings for Dual-Disc Applications Vendor_Bob Newby Racing The outside diameter is 1Drag Specialties Front Brake Tee with Fittings for Dual Disc Applications One piece design has No. 3 male fittings that will fit any universal AN No. 3 hose Chrome plated Made in the U. S. A. Included Items: (1) Chrome junction block W.(3) AN#3's