HKM-7328851 Commuter E-Bike Carries a 350W Hub and a 36V 13Ah 468Wh Pack on 26 x 2.125 CHAO-YANG Tires in White

350W · 36V 13Ah 468Wh · 26 x 2.125 · 50 mi · step-through · 7-speed · CHAO-YANG tires

A Hidden 468Wh Pack and Eight Speeds for the Daily Run to WorkCommute a Week Without the Sweat

A 350W rear hub with 80 Nm, a 36V 13Ah 468Wh pack hidden inside the down tube, CHAO-YANG 26 x 2.125 tires, a suspension fork and mechanical disc brakes, on a white carbon steel step-through frame with a rear rack. It is listed at 37 miles on pure electric, 50 miles on pedal assist and 20 mph, with three riding modes and a 7-speed drivetrain that lets you pedal it with the motor switched off. The rack, fenders and light are already fitted.

What makes this a commuter rather than a toy is how little it looks like an e-bike. The battery is inside the down tube behind a lockable cover, the cables run through the frame, and from three metres away it reads as an ordinary city bike. That matters if it is going to sit outside an office or a station for eight hours, because a bike that looks electrified is a bike somebody wants to steal the battery from.

The white paint is the other practical detail, and it cuts both ways. A white frame with black rims and black fenders is the most visible thing in a bike rack at dusk, which is worth more than any reflector on a commute. It also shows chain oil and road film sooner than a black frame, so it wants a wipe every couple of weeks rather than once a season.

At a Glance

• 350W Rear Hub — 80 Nm, with a throttle and pedal assist
• 468Wh Pack — 36V 13Ah, hidden inside the down tube
• 50 Miles Assist — 37 miles on pure electric, listed
• 26 x 2.125 Tires — CHAO-YANG tread, city and light gravel
• White Step-Through — Carbon steel frame, low standover
• Hidden Battery — Lockable cover in the down tube
• Three Ride Modes — Sport, pure electric and pedal assist
• Suspension Fork — Front travel, rigid rear triangle
• Mechanical Discs — Front and rear, cable actuated
• 7-Speed — Geared to pedal a flat pack home
• Internal Routing — Cables run inside the frame
• Rear Rack — Frame mounted, with a tail reflector

Hidden Battery and a Step-Through Frame

The frame is carbon steel in a step-through shape, with the pack inside the down tube behind a cover that unlocks with a key. It is not a small battery disguised as a tube: 468Wh is a real commuter pack, and putting it there keeps the weight low and central instead of hanging off a rear rack.

Cables run inside the frame from the bars to the motor and the rear brake, which is why the front end looks clean and why water and grit stay out of the outers. On a bike that lives outside, internal routing is not a styling choice, it is one less thing to replace every second winter.

Up front there is a suspension fork and behind the saddle a rigid triangle that carries the rack. On 26-inch wheels with 2.125 tires that is enough: the tire and the fork handle a cracked lane, and the rigid rear keeps a loaded rack steady.

• Frame: carbon steel, step-through, white
• Battery: 468Wh inside the down tube, lockable cover
• Fork: suspension, rigid rear triangle
• Brakes: mechanical disc, front and rear
• Tires: CHAO-YANG 26 x 2.125
• Routing: internal, bars to motor

Fitted as shipped: front and rear fenders, a rear rack with a reflector, an LED headlight, a kickstand and an LCD. The tires are CHAO-YANG 26 x 2.125, a size you can buy anywhere, and the frame has eyelets for a front basket.

350W Hub and Three Modes

The motor is a 350W brushless rear hub rated at 80 Nm, which is a lot of torque for the wattage and the reason it pulls away from a light without drama. Three modes are listed on the display: a sport mode that rides like a bicycle, a pure electric mode that runs on the throttle alone, and pedal assist for the days you want the range rather than the effort. The throttle works independently of the pedals, which is what makes the second mode useful in traffic.

The pack is 36V 13Ah, 468Wh, charged in place through a sealed port or taken out with the key if you would rather charge it indoors. A full charge takes four to six hours on the supplied charger, which is an evening rather than an overnight. Because the pack sits inside the tube rather than on a rack, the bike balances like a bicycle when you lift it by the frame, and the cover is the only part you have to remember to lock.

Range is listed at 60 km on pure electric and 80 km on pedal assist, which is 37 and 50 miles. The lower figure is the one to plan a commute around, because throttle use drains a 468Wh pack quickly, and cold weather takes a bite out of both. A 12-mile round trip is two charges a week rather than one.

Who It Fits and How It Rides

One frame size covers riders from about 5 ft 4 in to 6 ft 2 in on an adjustable stem, and the step-through shape means you can get on with a bag in one hand. The standover is low enough that a rider who has stopped cycling because of a hip or a knee can still throw a leg over at a light.

On pavement it is quiet and steady at 20 mph, and the 7-speed drivetrain means you can ride it as a bicycle with the motor off. On gravel the 2.125 tread is adequate rather than confident.

• Commutes up to about 12 miles each way
• Errands with a bag on the rear rack
• Riders who want an e-bike that does not look like one
• Not for sand, snow or technical off-road riding

What's in the Box

Before the first ride: fit the front wheel and check the axle, set the saddle and bar height, check both brake levers and the throttle return, then charge the pack fully. Learn where the battery cover key lives before the first ride, because it is the part you will want at a rack in the rain.

Color and Finish

Gloss white covers the frame and fork lowers, with black rims, black fenders, a black rack, a black cockpit and a black saddle. It is a high-contrast scheme that reads as an ordinary city bike from a distance, and the white frame is what makes it visible in a rack at dusk.

Touch-up paint in the matching white is available on request. The wear points are the chainstay under the chain and the frame where the rack and 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. A 468Wh pack charges in an evening, so there is no reason to leave it at 100 percent in a warm hallway for a week.

Check tire pressure weekly, the brake pads monthly, and the cable tension at the lever after the first hundred miles. Clean the battery cover seal when you wash the bike, oil the chain every few rides, and 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. The cover seal is the part that decides whether water ever reaches the pack.

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-7328851 · 26 in city commuter electric bike · 350W brushless rear hub rated at 80 Nm · 36V 13Ah 468Wh pack hidden inside the down tube behind a lockable cover · 37 miles on pure electric, 50 miles on pedal assist · 20 mph as configured · 7-speed drivetrain · mechanical disc brakes front and rear · suspension fork with a rigid rear triangle · CHAO-YANG 26 x 2.125 tires on black rims · internal cable routing · three ride modes · LCD display · throttle and pedal assist · LED headlight · front and rear fenders · rear rack with a tail reflector · carbon steel step-through frame in gloss white · 265 lb load rating · four to six hour charge · built for commutes and errands rather than sand, snow or singletrack