How the Tern HSD S11 E-bike Got a Longtime NYC Bike Commuter to Go Electric

Photo by Leah Balagopal

Tern HSD S11 Specs & Features

The Tern HSD S11 ($5,299) is a compact electric cargo bike. HSD stands for “Haul Stuff Daily,” and that's exactly how I use it.

The S11 is a Class 3 e-bike, meaning it has pedal assist tech and no throttle. Its giddy up is built on Bosch's Performance Sport motor and Smart System, which combines strong acceleration and a 545Wh battery, reliable hydraulic disc brakes, and an 11-speed Shimano drivetrain. The result is a bike that feels quick but stable, with a maximum assisted speed of 28 mph. In New York City, where e-bikes are now prohibited from traveling faster than 15 mph on city streets, that number acts more like a reminder of how much power this bike has in reserve.

The Tern is not a little bike, but it is smaller and more maneuverable than most e-bikes with this kind of capacity. It weighs 61.9 pounds—hefty compared to my old Fuji—has 20-inch wheels, and is tested for a maximum gross vehicle weight of about 397 pounds. The rear Atlas H rack holds up to 176 pounds, a spec I measure against loads of groceries, laundry, the occasional medium-sized adult passenger, and random Facebook Marketplace furniture finds that I definitely don't need. (But when moving it is so easy, it's hard not to buy.)

As someone who has had more bike lights stolen than I care to admit because I never remember to take them off, having ultra-bright Ignis headlights and a rear brake light built into the HSD S11 is an undeniable value-add. There are also different levels of pedal assist, although I shamelessly keep it on Turbo 90 percent of the time. The bike's built-in computer tells you when to shift up and down, keeping things simple. The Bosch eBike Flow app handles over-the-air updates and adds a second layer of security with eBike Lock, which kills the motor assist until your phone is nearby, and eBike Alarm, which triggers if the bike is so much as bumped. Be warned: the alarm has a hair trigger; load a pannier before disarming, and the whole block will know. But it's a welcome measure of peace of mind when you're parked outside a museum in Midtown, or it's spending a night on the street.

Tern makes a seemingly endless array of accessories, so you can customize the bike to suit your most common use case. I have a Sidekick Seat Pad, which makes it really fun to cart my friends around, as well as the WeatherTop Bag, a 45-liter waterproof carryall tote that slots so perfectly into the front basket, I get hit by a wave of satisfaction every time I use it. The whole setup makes the bike feel less like a gadget and more like a proper tool.

Photo by Leah Balagopal

Riding the E-bike Life in NYC

What I didn’t anticipate was how thoroughly practical owning an e-bike would be. I live a 25-minute walk from the closest grocery store worth going to, and hauling bags back in the cold (or heat) had become one of the great low-grade ordeals of my life. With the Tern, no more. The bike absorbs all of it without wobbling, and it's surprisingly easy to bike stuff around that's even heavier than me.

Equipped with the Sidekick seat, the Tern has taken my friend and me as far as the Rockaways, a 17-mile run from Greenpoint. I was surprised when we arrived with well over 60 percent of the battery left. On the way home, I let my friend drive while I sat on the back in my swimsuit, fresh from a dip in the ocean. The scenery blurring by was distinctly East New York, but on those small 20-inch wheels, I felt like I was on a moped in Bali.

I've spent so much time on the bike that people are now surprised when they see me on my road bike. Now, I'm often greeted with a bit of surprise. "Oh, you’re going analog today?" I cannot entirely argue with the implication.

I've been through all four seasons as an e-biker now, and New York is a place that puts dedicated bike commuters—and their equipment—to the test. Through snowstorms and slush, through torrential summer rain (have you seen those videos of water rushing into the subway?), and through the brief, merciful windows of October and April weather when riding anywhere feels like a gift, the HSD knows no bad season.

There's also something to be said for arriving somewhere and not looking like you just came from a gym, too. A lot of e-bikers make this case, but I didn't fully buy in until I knew it firsthand. I want to go to a nice dinner, put on kitten heels and a fit, and feel like a person who owns a blow dryer. The Tern makes all that possible.

The bike has effectively doubled my sense of time, or at least collapsed the gap between intended and actual arrival in a way that the subway, for all its theoretical efficiency, rarely manages. I have loved reading on the L as much as anyone, but I am not sorry to skip packing in at rush hour, or walking 15 minutes to the Nassau G only to discover that it is, once again, simply not running this weekend.

Tern HSD S11 Drawbacks

The main drawback is exactly what you would expect: this bike is heavy. It's a bit too much for me to get up the stairs on my own, though it is light enough that I can maneuver it fairly easily up curbs and through the busy city streets. I keep it outside most of the time, and I'll throw a cover on it if the forecast calls for extreme weather or if I'm going on vacation. In these ways, it's a bit more needy than my Fuji, which I can lock up outside without doing mental insurance calculations.

The other obvious con is the price. The HSD S11 starts at $5,299 before accessories, and the accessories are a big part of what makes the bike so useful to me. The add-ons can quickly make the situation evolve from bike upgrade into car replacement (without having to pay for insurance or gas, or deal with alternate-side parking).

Yes, I do still have my old beater; the Tern has not fully converted me, and I'm not sure I want it to. My "analog" bike is lighter, simpler, cheaper-looking, and easier to haul around. It's also still the bike I ride when I want the exercise. Riding an e-bike hasn't replaced cycling so much as it's replaced errands, commutes, and crosstown trips where I wish the subway were more reliable, or the walk a few minutes shorter. My old bike is still my meditation bike. The Tern is my get-my-life-done bike.

Alternatives to the Tern HSD S11

There are, of course, other ways to get around on two electric wheels. The Specialized Globe Haul ST ($2,700) is another compact cargo e-bike with a lower starting price and a similarly utilitarian approach, while the Aventon Abound SR ($1,899) offers a more budget-conscious alternative with plenty of carrying capacity and a more tech-forward feature set.

And then, because this is New York, there is always the electric Citi Bike. For occasional trips, it's hard to argue with the convenience of a no-maintenance e-bike, one that cultivates zero stress about whether it's still where you left it. But that comes with a wicked per-minute overhead. As of 2026, members ($239/year) pay $0.27 per minute for e-bikes, while nonmembers pay $0.41 per minute. More importantly, Citi Bike doesn't facilitate the sense of freedom that has made the Tern so useful to me. Spontaneity becomes much harder to inspire when it's limited to the space between docking stations.

Tern HSD S11 Final Thoughts

I can still love to cycle, and I do. But there's something to be said for arriving somewhere with a level heart rate, and your hair where you left it. The Tern HSD S11 hasn't made me less attached to my old bike, not exactly. It has simply made me more honest about what I need. Most days, that's not a heroic commute or an errand that builds character. It's simpler: a reliable way to move myself, my groceries, my friends, and my life around the city that never stops, all with a little less friction from one place to the next.

On top of all that, Tern isn't done with the HSD. A new generation arrived on 15 July 2026 with five new models that include the updated Bosch Performance motors. They also include features like a wireless e-shifter and Gates belt drive. The lighter Bosch drive systems deliver up to 90Nm of torque with pedal assist up to 28 mph, same as the bike I've been riding. The whole line keeps the 419-pound capacity and carries the Smart System's theft-protection suite. Pricing starts at $4,999.

SHOP NOW