The Companion GT was designed with the Harley-Davidson in mind. The bullet shaped design has the classic style that Harley owners love, and the suspension technology that they need. The GT has a trailing arm suspension and progressive coil spring damper unit by Progressive Suspension, giving the passenger an exquisitely smooth ride. The Companion GT rides on a 145/SR13 radial tire mounted on a 13-inch aluminum wheel, or you may choose the optional 16-inch motorcycle style wheel and tire to create the perfect match to the bike (available for most wheel styles). And, like all our other models, the Companion GT’s "quick-disconnect" system allows for the sidecar to be disconnected or reattached in about 15 minutes.