The Amp is a three-spoke, non-directional 3-D wheel that’s part of the Stark-Line Series, a new premium line of 3-D forged one-piece billet wheels. All Stark-Line Series wheels come with a lifetime structural warranty to safeguard riders against some of nature’s toughest forces.The Stark-Line Series offers six different wheel designs, as well as matching rotors in three different styles and sizes and matching pulleys (including Cush drives). The wheels are available for all 1984-present Harley-Davidson models, many Victory models as well as other metric cruisers. All Stark-Line Series wheel designs are also available in chrome or black powdercoat.