Ever since Rivian proposed a “micromobility business” in a medium-sized startup called and at the beginning of the year, there has been a lot of speculation about what kind of vehicles the company is working on. Now, again to show its first products: a line of e-bikes and two pedal-assisted electric quads.
The TM-B E-BIKE also tries with a do-it-all ie-bike that can adapt to different cases of use whether that is daily commuting, trail riding or hauling loads. It sports a dynamic frame that can also accommodate a bench seat or rear rack that supports up to 35kg of weight.
Different seats can be easily changed without additional tools. Instead, a button on the bike’s touch screen display controls the damping mechanism that releases the seat. It only comes in frame sizes, but it also says it should be adaptable to “many body sizes,” thanks to different seat sizes and styles.
TM-B bench seat.
(Karissa Bell for Engadget)
The removable USB-C battery comes in two sizes: Standard, which can power up to 60 miles of riding, and large, which goes up to 100 miles. When not riding, the batteries can also be used as a large external battery pack.
In terms of power, the TM-B’s Throttle Tops Out at 20mph although the bike can reach speeds of up to 28mph with more pedaling. And taking an interesting approach to its drive system, the setup is labeled “Dreamride.” Instead of a mechanical connection between the bicycle’s rear wheel and the pedals, the TM-B uses “software-defined feet,”
In practice, this means that the rotation actually feeds the generator that powers the bike’s battery rather than pushing you straight forward. However, he also told me that there is a “connection mode” because when the bike comes out of the juice so that the passengers will not meet. In those cases, the migration will give the bike enough juice to confidently move into a position where you can repeat.
You also ask TM-B in many situations, many of which involve heavy lifting.
(Karissa Bell for Engadget)
A software-controlled walk may not appeal to therapists, but he also says it enables a more personalized experience. When in Auto mode, the bike will adapt to the prevailing speed, although you can press on the incline to gain power. There is also a manual mode that allows you to select “gears” (here they are also controlled by software).
It also uses recharging, so tapping on the brakes helps recharge the battery. Although in my short ride I found that I didn’t need to use the brakes much, because when I stop full the bike slows down very quickly, kind of taking your foot on the accelerator with ev.
Application and portal show.
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Given the bike’s roots in Rivian, it’s no surprise that there’s also a host of other tech-enabled features, including a 5-inch display, “Portal, to play music and make calls through the accompanying app. There’s also a built-in safety system that automatically locks the frame and rear wheel when moving. On the handlebars, there are customized controls that can be used to adjust the volume and play music, answer calls or navigation by display.
Custom controls on the left fo The trip and the throttle on the right.
(Karissa Bell for Engadget)
Also selling the TM-B in three configurations. The first to be shipped next spring will be the $4,500 TM-B Limited Launch edition, which has 100 miles, support for standard and sport modes of riding and features obvious grunt accents. The $4,500 TM-B Performance has the same features as the Limited model, but has a different color scheme, and will be available within the “First Half” of 2026. It also hasn’t announced an exact price, but says it will cost less than $4,000 when it ships “later in 2026.”
Pre-orders for the launch program are open now and two more bikes are available to reserve with a $50 deposit. The bikes will also be on display at Rivian showrooms later this year,
And a quad for commercial use cases (left) and a small quad for families (right).
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The company is also previewing two electric, pedal-assisted quads called the TM-Q. It seems the small quad is meant for “families and people looking for a safer alternative to cars” that can still haul “important loads.” TM-Q, on the other hand, is designed for commercial delivery.
He has also partnered with Amazon to develop scooters for such vehicles that can be used by on-demand drivers. Both quads are intended for use on bike trails, according to it.
And you will partner with Amazon through TM-Q for TM-Q.
(Karissa Bell for Engadget)
The company did not share details on how these cars will be available or how much they will cost.
Update, October 22, 2025, 2:29 PM PT: Added more information and photos from the launch and launch event.
