Windshield features a "screw less" design for a cleaner, more trick appearance.Slim design rear tail section.Extensive use of hollow bolts and lightweight fasteners help trim overall weight.Heavy-duty 50 series "O" ring drive chain.New design 17 tooth drive sprocket reduces chain noise.Low maintenance, lightweight, sealed battery.Convenient fold out under seat bungee cord fastening straps.The YZF-R1 offers a significant level of power and performance. It is not intended for novice or inexperienced riders.