Mule Jager SD eBike | Dual Battery Fat Tire Hunting Bike

The Mule Jäger SD is the evolution of our flagship workhorse, built for hunters who demand more. We kept the heart of the Mule, Bafang’s Ultra mid‑drive motor, the “diesel engine” of ebike motors and the industry‑leading rack system that accepts up to 40 Ah of battery capacity for outstanding range. But for the Jäger, we added a German‑engineered Rohloff 14‑speed internal gear hub. It delivers a massive gear range and lets you shift while standing still, so you never lose momentum on steep climbs or while towing a fully loaded trailer. This isn’t just transportation; it’s a backcountry utility vehicle purpose‑built for serious hunters and adventurers.

Rohloff Speed Hub Electrical Shifting
Delivered with Bakcou Connect free for the first year and a small fee for each additional year
Dual battery option (40 total amp hours)
Modular Rack with Quick Release System
Adjustable Class 1 / 2 / 3 modes via Bakcou’s On-Demand Program (ODP)
Integrated Display with ODP System
US Made Components
US based; industry leading customer service

Climbing/Hauling
BEST USE

ODP
MOTOR SPECS

50 MILES
EST. RANGE

$7,399.00

*20ah battery included | RESTOCK FALL 2026 | Orders Placed Will be Fulfilled Upon Arrival Fall 2026

Shipping calculated at checkout.

STEP 1: COLOR — Matte Gunmetal Grey

Matte Gunmetal Grey

Matte Army Green

Bakcou Camo

STEP 2: TIRE

26"

24"

Step 3: Additional Battery (Not included)

NO DOUBLE RANGE

20 AMP HOURS

Recommended Accessories

+ ADDED

GoPro Bike Headlight (& FREE Shipping on Order)

$199.00

+ ADDED

Folding Cargo eBike Trailer

$389.00

Manuals

Warranty

Tune/Repair

Rohloff Speed Hub Electrical Shifting
Delivered with Bakcou Connect free for the first year and a small fee for each additional year
Dual battery option (40 total amp hours)
Modular Rack with Quick Release System
Adjustable Class 1 / 2 / 3 modes via Bakcou’s On-Demand Program (ODP)
Integrated Display with ODP System
US Made Components
US based; industry leading customer service

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Conquer Any Terrain With The Mule Jäger  SD

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 (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.

MOTOR Bafang Ultra M620 Mid-Drive Motor. Class 1/2/3 capable. Torque sensor and 160Nm of torque	BATTERY Integrated Battery 52V - 20ah Lithium-Ion battery with 52v / 4amp Smart Charger. *Dual Battery Option - An extra 20ah battery to extend your distance with a fully integrated modular rack with Quick Release System.
TECHNOLOGY Comprehensive On-Demand Program for all classification selections.	GEARING Rohloff E-14 Electronic 14-Speed Hub
DISPLAY Integrated Stem Display.	BRAKES Tektro HD E725 Quad Piston Hydraulic Brakes with 203mm Front & Rear Rotors
THROTTLE Removable Left Thumb Throttle	FRAME 6061 Aircraft-Grade Aluminum Alloy
STEERING PROMAX 760mm Wide Handlebars with Ergonomic Locking Grips	SIZE 24" and 26" Options
BAKCOU CONNECT Know the health of your bike and location with enhanced security technology. *Delivered with Bakcou Connect free for the first year, and $99/year each following year	BIKE WEIGHT 26" TIRES With Battery: 98 lbs Without Battery: 86 lbs BIKE WEIGHT 24" TIRES With Battery: 95 lbs Without Battery: 83 lbs

SUSPENSION
Inverted High-Performance Air Fork
140mm Travel (26") / 130mm Travel (24")

TIRES
24" x 4.0" CST
26" x 4.0" Maxxis Minion

Design

The Mule Jäger SD electric bike is engineered for serious backcountry performance, combining rugged durability with refined control. Built around a 6061 aircraft-grade aluminum frame, this step-through design makes mounting and dismounting easier without sacrificing strength. The balanced geometry keeps weight centered for improved handling on steep climbs, technical trails, and uneven terrain, making it an ideal electric hunting bike for long days in the mountains.

Drivetrain

The Mule Jäger SD is equipped with the Rohloff E-14 electronic shifting system, one of the most advanced and durable drivetrains available on an electric bike. This fully enclosed 14-speed hub eliminates exposed components like derailleurs, reducing the risk of damage from rocks, mud, or brush. With precise, push-button shifting and minimal maintenance, the Jäger delivers unmatched reliability and performance for demanding off-road and backcountry riding.

Motor and Power

Powered by the Bafang Ultra M620 mid-drive motor, the Mule Jäger SD delivers up to 1500W of peak power and 160Nm of torque for serious climbing capability. The integrated torque sensor provides smooth, responsive power output that adjusts to your pedaling effort, giving you better control on technical terrain. Whether hauling gear or navigating steep mountain trails, this electric fat tire bike delivers consistent, reliable performance. Motor is capable of being set to comply with Class 1/2/3 ebike settings.

Suspension

The Mule Jäger SD features an inverted high-performance air suspension fork designed to handle aggressive off-road terrain. With up to 140mm of travel, this system absorbs impacts from rocks, roots, and rough trails while maintaining stability and control. Paired with a suspension seat post, the ride stays smooth and comfortable even during long backcountry hunts or extended trail rides.

Braking System

Equipped with Tektro HD E725 quad piston hydraulic brakes and oversized 203mm rotors, the Mule Jäger SD delivers powerful, consistent stopping performance. This advanced braking system provides increased control and confidence when descending steep terrain or carrying heavy loads, making it a reliable choice for demanding off-road conditions.

Integrated Display

The Mule Jäger SD features a sleek integrated stem display that keeps essential ride data easily accessible without cluttering the cockpit. Designed for durability and visibility in rugged conditions, the display allows riders to customize their experience by selecting between Class 1, 2, or 3 riding modes. Easily monitor key metrics like speed, trip distance, and odometer, while making quick adjustments on the fly. This intuitive control system keeps you fully connected to your ride, whether you're navigating technical trails or covering ground in the backcountry.

Tires

Built with aggressive 4-inch fat tires, the Mule Jäger SD is ready for any terrain. The 26” Maxxis Minion tires deliver exceptional grip and control on loose, rocky, and muddy trails, while the 24” CST option provides a more compact, maneuverable ride. A Jäger model available in 2 tire sizes has made it an option for many more riders. Combined with puncture-resistant liners, these tires give riders confidence in remote backcountry environments.

Utility and Accessories

Built for more than just riding, the Mule Jäger SD features a revolutionary rear rack system designed to expand what an electric hunting bike can do in the backcountry. This integrated system supports a range of accessories including gear bags, racks, and trailers, allowing you to haul equipment for hunting, camping, or extended trips with ease. It also accommodates a spare battery that can be plugged directly into the bike, giving you the ability to extend your range deep into remote terrain. Combined with features like a chainstay protector, wide platform pedals, and a durable axle system, the Mule Jäger SD is purpose-built for real-world performance where utility matters most.

FAQ

The Jäger SD builds on the Mule’s proven platform by replacing the external derailleur with a Rohloff 14‑speed internal gear hub. This sealed hub provides a huge gear range, allows you to shift while stationary and drastically reduces maintenance. It pairs perfectly with the Bafang Ultra motor, offering smoother, quieter and more reliable performance when towing heavy loads.

The Rohloff internal gear hub brings several key advantages to our Jäger‑series ebikes. First, it offers a 14‑speed drivetrain with a massive 526% gear range, giving you plenty of low gears for steep climbs and high gears for faster stretches. Because all the gears are sealed inside the hub, there’s no exposed derailleur or cassette to catch on brush or accumulate mud, which dramatically reduces maintenance and improves reliability. The hub also lets you shift through multiple gears at once, even while you’re standing still, so you can drop into the right gear before tackling a steep hill or picking up speed after a stop. In short, the Rohloff hub delivers smooth, precise shifting, lowers the risk of drivetrain damage on rugged trails and helps you maintain momentum under load. This makes it ideal for the hunting and backcountry riding that our Jäger ebikes are built for.

The Jäger is designed for heavy loads. Its cargo‑oriented geometry, reinforced frame and wide fat tires allow riders to carry gear and tow game carts into remote backcountry. It’s ideal for steep mountain trails, muddy back roads, snow, and sand. Like our other Super Duty models, we rate it to carry approximately 350 lbs of rider and gear.

While not possible to give a precise single‑charge range for any bike because your mileage will depend on factors like terrain, elevation, rider weight, wind, temperature and the level of assist or throttle you use, we can offer a ballpark estimate: with a single battery most riders see around 40–60 miles of real‑world range, and with a dual‑battery setup you can extend that to over 100 miles. Think of these numbers as general guidance rather than guarantees because actual range will always vary based on how and where you ride.

For all of our ebikes, we stand behind your purchase with a one‑year limited manufacturer’s warranty. The warranty starts the day you receive your bike and covers major components like the battery, frame, motor, controller, wiring harness and LCD display. To activate your coverage, be sure to register your bike within 30 days of delivery; the warranty is valid only for the original owner and can’t be transferred. It protects you against manufacturing defects in materials and workmanship but doesn’t cover normal wear, misuse or modifications. If you ever have a problem, just reach out to our support team and we’ll guide you through the warranty claim process.

For more information on warranty for your bike, please see the Warranty & Returns page.

MULE JÄGER SD

SEE IT IN ACTION

FAQ

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Smoother shifting for miles.