Just because your motorcycle is 25 years old, doesn't mean that your shocks need to be. Works Performance shocks are custom built to AHRMA legal specifications whether your suspension is stock or has been modified in the past. For vintage road racing, enduro, motocross, dirt track, trials or street riding, each pair of Works shocks is constructed specifically for each bike, rider and type of riding. Now available for the new Evolution and Bomber classics. Since 1973, Works Performance has built shocks for winners. Works Performance - The Vintage Advantage.