Rivian apologizes for delays in shipping futuristic Also e-bikes

The TM-B from Rivian’s micromobility spinoff Also was supposed to reach customers by spring 2026. But after months of delays, the company is opening up about the challenges it’s facing.

Rivian’s futuristic e-bike is delayed, and customers are not happy.

Last year, Rivian’s micromobility spinoff Also unveiled a new, software-controlled electric bike called the TM-B that immediately set the e-bike world ablaze. With USB-C chargeable battery, removable seat post, and software-controlled pedal-by-wire system, the TM-B set itself apart with a totally unique approach to electric bicycle design. It’s not an exaggeration to say that nothing else looked like this bike.

But that list of high-tech features is creating unexpected bottlenecks for Also’s product team. The company had originally said customer deliveries would start in spring 2026, and then later summer. But now, with fall approaching, the TM-B has yet to reach any customers — and several reservation holders are making their frustrations with the delays known on Reddit .

This past weekend, Also went the unique route of responding to those criticisms on Reddit. Saul Leiken, Also’s product manager, posted a 661-word letter apologizing to customers for the delays, attributing the hold-up to strict quality standards rather than rushing an unfinished product.

Leiken attributes the delay to “significant supply chain challenges” as a result of the AI boom. Specifically, the company has struggled to find enough printed circuit board (PCB) and integrated circuit (IC) materials for its software-powered e-bike. In some cases, Also’s team has had to find new materials that deviate from the original design, which requires more engineering and testing work to make sure its the right fit.

TM-B’s battery has also presented some hurdles. The batteries, which are available in either 538Wh or 808Wh packs, are supposed to offer up 100 miles of range. But the 240W power delivery exceeds current regulatory guidelines, which is forcing Also to work with standards groups to establish “new safety and testing protocols,” Leiken says.

Lastly, Also may have bitten off more than it can chew with the DreamRide drivetrain system. It’s a pedal-by-wire system, which means there’s no mechanical connection between the pedaling and the movement of the bike. Instead, the rider pedals a generator motor on the crank, which replenishes the battery; a separate traction motor at the rear wheel is software-driven via a Gates Carbon belt drive. But the system requires “high-precision manufacturing,” Leiken admits, which has led to “a slower production ramp-up to ensure quality.”