NBD: The Easy-To-Ride, Ultra Low-Step E-Bike

The NBD is a premium, ultra-low step-through e-bike designed to help riders of all sizes and abilities experience the joy and freedom of cycling.

Its accommodating geometry prioritizes stability and effortless riding, while thoughtful features ensure a smooth, comfortable ride. Highlights include an adjustable cockpit for a custom fit, ergonomic grips on swept-back handlebars, a suspension seatpost for extra comfort, and the option of a low-maintenance belt drive, to name just a few.

For grandparents, petite riders, or anyone with physical limitations, the NBD makes riding simple and reassuring. It’s easy to step through, lets you plant your feet at stops, and helps you stay active with confidence. With a maximum load capacity of 309 lb and a rear rack rated to 60 lb, new parents can also count on the NBD to safely carry a young kid in a child seat or some cargo while staying stable and in control.

Cycling Made Effortless

Designed for confidence and comfort, the NBD is our most approachable bike ever. Its low center of gravity delivers exceptional stability, making every ride feel smooth and intuitive. With full control and power underfoot, riders are ready to take on whatever’s next. An ultra-low step-over height makes mounting and dismounting easy for riders of all sizes.

One Bike. Many Riders.

Built with sharing in mind, the NBD features a tool-free adjustable cockpit that resizes in seconds. Designed to fit riders between 4'10"–6'3", it’s ready to adapt to everyone in the household.

Comfort Comes First

Cycling should melt stress away. That’s why the NBD features wide, ergonomic grips, swept handlebars, and an upright riding position for a natural, relaxed feel. A multi-adjustable stem lets you fine-tune your fit, while wide balloon tires and a suspension seatpost absorb bumps and vibrations along the way.

Easy to Transport and Store

The NBD is built to travel and store with ease. Its FlatFold feature lets the bike pack down into a low, flat profile that fits on trains, buses, RVs, and even in smaller cars—no bike rack needed.

When you’re done riding, the NBD rolls and parks vertically for simple, secure indoor storage. It fits easily into elevators and stores neatly at home or at the office, using minimal floor space.

Why the NBD? It's Really for Everyone.

It's Really that Comfy

ERGONOMIC COCKPIT: Swept handlebars and Ergon grips make the NBD just about the most comfortable cockpit you’ll find on a bike. The slack seat tube enables all riders, even the smaller in stature, to place their feet on the ground at stops.

RIDEEASY SUSPENSION SEATPOST: The custom short-stack suspension seatpost adjusts to fit riders of different heights, and allows even smaller sized riders to travel without feeling road vibrations.

AIR-CUSHION BALLOON TIRES: No special technology needed—air suspension is already built in. The air cushion from Schwalbe's wide balloon tires give a smooth ride, helping to reduce bumps and other road vibrations when riding.

FEET-FRIENDLY PEDALS: The platform of the pedal is extra-large for boosted foot stability. Feet naturally and securely snug into its gentle concave shape. And the pedal has an improved grip for all types of shoes.

It's Really that Great

SMOOTH, POWERFUL MOTOR: The Bosch e-assist motor system is powerful, efficient, smooth, and supremely quiet. It's also backed with best-in-class service and support, and a network of thousands of trained dealers in cities around the world.

BOLD, BRIGHT, AND EASY TO READ DISPLAY: The Bosch Intuvia display has all the information you need. It's easy to read on your daytime rides, and brightly lit for when you ride at night. Plus, the entire display is removable and perfectly sized for pockets so you can carry it with ou after you park for added peace of mind.

HASSLE-FREE BELT DRIVE: Bike chains are great, but often need cleaning and lubing. The NBD S5i comes equipped with a Gates belt drive for durability, low maintenance, and a smoother and quieter ride, so you can spend less time cleaning, and more time riding.

EASY-ACCESS FRAME LOCK: With an Abus frame lock at the top of the rear wheel, most riders can lock up without having to bend down low. And for added simplicity, you'll need only one key, as the frame lock and battery lock are keyed alike.

Please note: You will need to pick this product up from a local dealer. Your Airstream x Tern E-Bike is carefully built by certified Tern Dealers who will run through a thorough pre-delivery safety checklist before handing over your new bike. Before purchasing, please select the best location to arrange for pickup. The return window on E-bikes is 30 days, not the standard 60 days. You are responsible for return shipping and re-packaging. The item must be in original packaging and in resellable condition. Original shipping costs will not be refunded.