The HSD S9i Sport is the flagship, and it's loaded. It combines Bosch's 90 Nm Performance Sport motor and 28-mph Class 3 assist with the 3x3 NINE internally geared hub: nine speeds, a huge 554% range, and Bosch eShift, so you can shift under load or at a complete stop. All of it runs through a silent Gates carbon belt. The Kiox 300 display and Bosch ConnectModule add GPS tracking and an eBike alarm, while a Cane Creek suspension seatpost and a burlier 34 mm Suntour fork make loaded rides genuinely plush. Magura MT4 brakes, 419 lb capacity, integrated lights, and the same 5-second fold round it out. This is the HSD with everything.