Born from the heritage of Bakcou’s flagship Mule, the Mule Jäger SD takes everything riders love about the original workhorse and elevates it with a precision German‑engineered Rohloff internal gear hub. This sealed 14‑speed hub provides a huge 526% gear range and lets you shift through all 14 gears without pedaling, so you can drop into a lower gear even while standing still on a steep hillside. Because the gears are enclosed, there’s no derailleur to catch on brush or break in rugged terrain. Paired with Bafang’s ultra‑powerful M620 mid‑drive motor (500/750/1000 W)—often called the “diesel engine” of ebike motors—the Jager churns out up to 160 Nm of torque and 1 500 W peak power, giving you seamless, maintenance‑free shifting and hill‑climbing muscle for heavy loads.

A 52 V 20 Ah battery powers the system, and our modular rack lets you add an extra 20 Ah battery to double the capacity, up to 40 Ah total, eliminating range anxiety on long hunts and multi‑day expeditions. Built around the Mule’s aircraft‑grade 6061‑aluminum frame with a patented rear rack, the Mule Jäger SD balances strength and agility. Its inverted 120 mm air‑fork suspension and shock‑absorbing seat post smooth out rocky trails and washboarded dirt roads, while 24‑inch or 26‑inch fat tires provide unrivaled traction on mud, sand and snow. Four‑piston hydraulic disc brakes deliver confident stopping power, and wide, skid‑proof pedals offer secure footing even with heavy boots. An integrated stem display with Bakcou’s On‑Demand Program lets riders choose between Class 1, Class 2, or Class 3 modes, and Bakcou Connect technology (free for the first year for Mule models) provides remote security, tracking and diagnostics via smartphones. With the Mule Jäger SD, you get the legendary power and range of our Mule plus the effortless shifting, durability and low maintenance of a Rohloff hub—everything you want and everything you didn’t know you needed.