21" 120 AV71"Cobra" Whitewall Front Avon Tire for Harley-Davidson Motorcycles 21" Avon 'Cobra' Tire AV71 Densely wrapped belt in center for stability, wear, and mileage; less dense on shoulders for huge, complient contact patch. Consistent handling and stability for the full life of the tire. Snakeskin Sidewall Treatment Complements Cobra logo and tread deasign. Tread gives optimal water dispersal. Design reduces flex for improved grip and stability. In short, best performing tire on the market, bar none. 120/70 x 21" Blackwall