Raw machined aluminum finish. With 1" (25.4mm) diameter handlebar clamp area. Sold without top clamp; the top clamp (top plate) is sold separately depending on application. These isolated risers are designed to be solid-mounted to the top triple tree and are installed with the supplied billet bushings. This creates a much more rigid bar setup; allowing for improved control and far greater use of your bike''s suspension and braking capabilities. As for vibration dampening; the rubber bushings are relocated just below the handlebar. There they are placed inside the riser mid-section. The proprietary use of these rubber isolators drastically reduces the amount of unwanted movement at the bushings. This creates a much more solid bar feel; giving you greater confidence in your bike''s handling. You''ll notice the difference of a hard-mounted riser legs and relocated rubber isolators right away. - Far less vibration than rigid mounted risers and a much better bar feel.- Bottom clamp has an opening to accommodate hidden wiring - Top clamp ((top Plate) must be purchased separately depending on your application - 3.5" center to center for standard OEM H-D fitment - Bushing life is increased; maintenance lowered - Wiring slot in the center of the riser body allows for easy installation and clean wiring. Note: Sold without top clamp; the top clamp (top plate) is sold separately depending on application.Note: Kraus Isolated Risers are designed and engineered for universal fitment