HKM-9090899 Cargo Fat Tire E-Bike Runs a 1000W Geared Hub on a 48V 23Ah 1104Wh Pack with 180 Mm Hydraulic Discs

1000W · 48V 23Ah 1104Wh · 26 x 4.0 · 47 mi · 80 Nm · 180 mm hydraulic discs · 330 lb

Hydraulic Stoppers and a Geared Hub Built for Wet TrailsEighty Newton Metres of Pure Quiet

A 1000W geared rear hub with 80 Nm, a 48V 23Ah 1104Wh pack in the frame, 26 x 4.0 fat tires, a suspension fork and 180 mm hydraulic disc brakes, with a rear rack rated for cargo. A single motor rather than two, listed at 47 miles and built around the load rather than the speed: this is the version for riders who carry things and do not want to maintain a second hub, and who would rather have the range than the extra driven wheel.

One motor or two is the choice that splits this class of bike, and the argument for one is simpler than it sounds. A single geared hub with 80 Nm has enough torque to move a loaded rack on gravel, it has half the wiring and half the controllers, and there is no front hub pulling the bars when the surface turns loose. The cost is that a genuinely soft patch will stop it where a two-wheel-drive bike would keep going. That is a real difference on a fire road, and a theoretical one on a bike path.

What you get instead is range. The 1104Wh pack is the same one that appears on the dual motor bikes in this range, and on a single motor it goes further: 47 miles listed, against the mid-thirties on a two-motor build with the same battery. For a rider whose route is a rail trail or a gravel loop rather than a sand dune, that is the sensible trade.

At a Glance

• 1000W Geared Hub — Single rear hub, 80 Nm of torque
• 1104Wh Pack — 48V 23Ah in the frame, key-locked
• 47 Miles Listed — The long-range build in this frame
• 26 x 4.0 Tires — Fat casing for gravel, sand and snow
• 180 mm Hydraulic Discs — Front and rear, sealed system
• 80 Nm Torque — Enough for a loaded rack on a climb
• Rear Cargo Rack — Frame mounted and rated for loads
• Suspension Fork — Coil sprung, rigid rear triangle
• 330 lb Load — 150 kg rating for rider and cargo
• LCD Display — Speed, battery, assist and trip
• Fenders — Front and rear, fitted
• Hydraulic Brake Levers — With motor cut-off switches

Frame, Fork and Cargo Rack

The frame is a step-over alloy triangle with the 1104Wh pack inside it, which keeps the weight low and central and leaves the rear rack free for cargo rather than a battery bag. The rack is bolted to the frame at four points instead of clamped to the seat post.

Up front there is a coil-sprung suspension fork and a rigid rear triangle. On four-inch tires that is a sensible split: the tire absorbs the small stuff, the fork handles the bigger hits, and a rear shock would eat into the rack's load capacity.

The cockpit carries an LCD in the middle, a throttle on the right and a Shimano shifter under the left hand. Hydraulic brake levers sit on both sides with motor cut-off switches, so the motor stops the moment you brake.

• Frame: step-over alloy, battery in the frame
• Fork: coil-sprung suspension
• Rear: rigid triangle, four-point rack
• Brakes: hydraulic disc, 180 mm rotors
• Tires: 26 x 4.0 knobby
• Drivetrain: Shimano gearing

Fitted as shipped: front and rear fenders, the rear cargo rack, an LED headlight, a kickstand and the battery keys. The tires are 26 x 4.0 with a knobby casing, which is what makes a gravel towpath and a snowed-in lane usable rather than an adventure.

Motor, Battery and Range

The motor is a 1000W geared rear hub with 80 Nm, and it freewheels when you stop pedalling rather than dragging the wheel. Geared rather than direct drive is what makes that possible, and it is also why the bike rolls like a bicycle when the pack is flat. A geared hub carries its reduction inside the shell, so the motor turns at a speed it likes while the wheel turns slowly, which is why 80 Nm arrives at the tire rather than as noise.

The pack is 48V 23Ah, 1104Wh, key-locked in the frame and removable for indoor charging. A full charge takes six to eight hours on the supplied charger, so it is an overnight job rather than something you do between errands, and the pack is heavy enough that you will want both hands. The lock is on the frame rather than the case, so the cover stays with the bike when the pack comes out, and the charge port is sealed against a wet ride.

Range is listed at 47 miles, and the single motor is the reason it is that high: the same battery on a dual motor build lists in the mid-thirties. Cold weather, a loaded rack and a headwind all pull it down, so plan a 15-mile round trip on two charges a week. The low figure is the one to plan a loaded day around, because a full rack costs range the way a headwind does.

Who It Fits and How It Rides

One frame size covers riders from about 5 ft 6 in to 6 ft 4 in, and the fat tires raise the saddle compared with a normal 26 in bike. Shorter riders should sit on one before ordering, because the standover on four-inch wheels is taller than the number suggests.

On gravel and packed sand it is calm and stable, and the 180 mm rotors are the part that matters once the rack is loaded: they stop a 330 lb combination with two fingers where a 160 mm cable disc would need the whole hand. On pavement the knobby tread hums and the steering is slow.

• Cargo runs, grocery trips and delivery errands
• Rail trails, gravel loops and fire roads
• Camping and hunting trips with a loaded rack
• Not for deep sand, tight singletrack or fast road riding

What's in the Box

Before the first ride: fit the front wheel and check the axle, set the fork preload for your weight, bed the hydraulic brakes in with ten firm stops, and check the rack bolts before you load it. Charge the pack fully, and load the rack evenly rather than hanging weight off one side.

Color and Finish

Matte black covers the frame, fork and rack, with black rims, a black cockpit and grey graphics on the down tube. It is the plainest finish in this range, which is what a cargo bike should be: the scratches from a crate and a bungee hook are the point, not a problem.

Touch-up paint is available on request. The wear points are the chainstay under the chain, the rack deck and the dropouts where the fender stays bolt on.

Battery Care and Maintenance

Charge the pack between 20 and 90 percent for daily use and take it to full about once a month so the management system can balance the cells. An 1104Wh pack takes most of a night, so start it in the evening rather than an hour before you leave. Charge it indoors at room temperature rather than in a cold garage.

Check tire pressure before every ride: 18 to 20 psi on pavement, 10 to 12 psi on sand and gravel. Check the rack bolts and both axles after the first 50 miles, and check the hydraulic brake pads monthly, since a loaded bike wears them faster. Check the spoke tension on the rear wheel after the first 20 rides, since a hub motor loads that wheel harder than a bicycle hub does, and check the rotor bolts at the same time.

Specifications

Frequently Asked Questions

Service and Policies

Coverage that lasts beyond the box. Orders ship free with a tracking number in 2 to 5 business days. From delivery, the product is protected for 180 days against manufacturing defects and transit damage, returnable within 30 days for a full refund, and covered by a 24-month parts-and-labor warranty on manufacturing defects. Four policies, one idea: ship it free, protect it for 180 days, take it back for 30, and stand behind it for two years.

HKM-9090899 · 26 in cargo fat tire electric bike · 1000W geared rear hub with 80 Nm · 48V 23Ah 1104Wh pack in the frame, key-locked and removable · 47 miles listed range · 28 mph as configured · Shimano drivetrain · 180 mm hydraulic disc brakes front and rear with motor cut-off · coil-sprung suspension fork with a rigid rear triangle · 26 x 4.0 knobby tires on black rims · LCD display · throttle and pedal assist · LED headlight · front and rear fenders · rear cargo rack bolted at four points · 330 lb load rating · matte black with grey graphics · built for cargo runs, gravel loops and fire roads rather than deep sand or singletrack · key-locked pack with a sealed charge port · six to eight hour charge · ships with charger, keys and tools · fenders and cargo rack fitted at the factory