Several years ago, a skunkworks team of engineers inside Rivian set out to develop a micromobility vehicle. One central question loomed: what should they build in-house? Rivian founder and CEO RJ Scaringe explained the early days of the project, which later spun out as a separate company called Also. He stated that they realized the only way to do this well was to build everything themselves. Scaringe now sits on Also’s board.
The result, revealed at an event in Oakland, is a pedal-assist electric bike called the TM-B. According to Scaringe and Also President Chris Yu, this is more than just a bike; it is a whole platform of products they plan to build in the micro-mobility space.
At a passing glance, the TM-B looks like a sleekly designed bicycle with a few hidden-in-plain-sight features. Yu contends that what lies beneath the surface is what makes the TM-B special and compelling enough to break into the crowded e-bike market.
The TM-B will come in several trims, including a launch edition, a performance version, and a base model. The launch edition has identical specs to the performance trim. These include a battery with an estimated 100-mile range, ten assistive levels, air shocks and an air fork for the suspension, and two ride modes including a sport mode. The launch edition costs forty-five hundred dollars and features special launch colors of purple and blue. It will come to market this spring.
The performance trim also retails for forty-five hundred dollars and is expected to arrive in the first half of 2026. The base version has a battery with up to 60 miles of range, five assistive levels, an air shock and coil fork for the suspension, and one standard ride mode. It is expected to cost less than four thousand dollars when it hits the market in the second half of next year.
All of the bikes are equipped with front and rear LED lighting with integrated turn signals and have a top speed of 20 miles per hour. A biomotion design illuminates the rider’s legs as they pedal. The TM-B has 24-inch wheels and can be outfitted with all-terrain tires, pedals, and a trail ride mode that gives riders more manual control.
The battery is removable and comes with USB-C fast charging up to 240 watts, allowing users to power up other devices. An integrated security feature automatically locks the battery, wheels, and frame once the rider walks away. If the bike is tampered with, the rider receives an alert via the Also app and the bike will emit a loud honking sound. This sound can also be deployed by the rider while navigating city streets.
The bike includes LTE and GPS. If the bike is moved, the owner gets a push notification with its real-time location. In a worst-case scenario where the bike is physically picked up and placed in a vehicle, the owner can remotely disable it, rendering the bike unusable.
All the technology inside the TM-B was developed by the Also and Rivian team. This includes the removable battery pack, power electronics, software, firmware, and a pedal-by-wire propulsion system that has no mechanical connection between the rider’s pedaling and the bike’s movement. The company even designed the tools used to build these elements.
All trims feature a central touchscreen display integrated between the handlebars and a modular top frame. This frame allows the user to change from a solo, bench, or utility cargo setup within a few seconds without any tools. The standard solo seat comes with two water bottle cages. The utility setup has an integrated rear rack, one water bottle cage mount, and can carry about an additional 77 pounds of cargo. A bench option is also available. The software for each setup aligns with that configuration and syncs with the central touchscreen.
The company also developed a helmet in-house called the Alpha Wave Helmet. It uses a newly developed technology to improve rotational impact protection and has a redesigned strap that can be tightened with one hand. The helmet includes integrated lights and an audio system with four wind-shielded speakers and two noise-canceling microphones. It syncs with the bike’s central touchscreen or the rider’s phone for listening to music, taking calls, and receiving turn-by-turn navigation.