Rivian’s Offshoot Issues Apology for E-Bike Shipping Delays

Rivian’s ambitious e-bike project is facing delays, leaving customers feeling frustrated. Last year, Rivian’s micromobility division introduced the TM-B, a cutting-edge electric bike that quickly captured attention with its innovative features. With a USB-C rechargeable battery, a removable seat post, and a software-controlled pedal-by-wire system, the TM-B stands out in the e-bike market for its unique design.

However, these advanced features have led to unforeseen challenges for the product team. Initially, the company announced that deliveries would begin in spring 2026, then pushed it to summer. As fall approaches, the TM-B has yet to reach any customers, prompting several reservation holders to voice their concerns on Reddit.

In response to the backlash, the product manager, Saul Leiken, took to Reddit to address the situation. He shared a detailed letter apologizing for the delays, explaining that the company is prioritizing quality over rushing an incomplete product. Leiken cited “significant supply chain challenges” stemming from the recent AI boom, particularly in sourcing printed circuit board (PCB) and integrated circuit (IC) materials essential for the e-bike’s software capabilities. This has led to the need for alternative materials, which require additional engineering and testing to ensure compatibility.

The TM-B’s battery has also posed challenges. Available in 538Wh or 808Wh options, the batteries are designed to provide up to 100 miles of range. However, the 240W power delivery exceeds current regulatory standards, necessitating collaboration with standards organizations to develop new safety and testing protocols.

Additionally, the complexity of the DreamRide drivetrain system may have been more than the company anticipated. This pedal-by-wire system eliminates mechanical connections between pedaling and bike movement, instead using a generator motor on the crank to recharge the battery while a separate traction motor at the rear wheel is controlled by software through a Gates Carbon belt drive. Leiken acknowledged that this system demands “high-precision manufacturing,” which has contributed to a slower production ramp-up to maintain quality.

Rivian’s Also aimed to create one of the most advanced e-bikes ever, so the delays shouldn’t come as a complete surprise. However, it could be argued that the company should have better anticipated the challenges associated with such a complex product. Leiken admitted that they could have improved communication regarding the delays and expressed regret for not doing so.

“With any complex and technology-laden product, we have a choice,” he stated. “As we ramp production, we can either lower our standards to meet an original timeline or maintain high standards and face potential delays. We believe our decision to uphold those standards was, and is, the right one. At the same time, we recognize that we should have communicated more effectively throughout this process.”