Dinan D663-0645-BOX is a polished double-walled, straight-cut clamp-on exhaust tip with a 4.5-inch outlet and 3.25-inch inlet. It is constructed from T304 stainless steel, measures 5 inches long, and features a shrouded design with an engraved Dinan logo. The clamp-on design allows installation with hand tools; the required band clamp is sold separately. This tip is sold individually and is listed by Dinan as an emissions-neutral service or appearance component. It can be used as a replacement tip for Dinan exhaust kits D660-0096 and D660-0097.