Rivian Spinoff Also Starts Shipping E-Bikes After Parts Shortages and Certification Delays

Also, a micromobility company spun off from US electric vehicle maker Rivian, has started delivering its first TM-B e-bikes to customers after delays. The startup is led by Chris Yu, a former chief technology officer at bike maker Specialized, and Rivian remains a minority shareholder. In an interview with tech outlet The Verge, Yu explained why ramping up production took longer than planned.

What the TM-B is

The TM-B is a modular e-bike with a swappable top frame, a USB-C chargeable battery, a built-in screen, a series hybrid pedal-by-wire system and proprietary software. The company also offers the TM-Q, an electric four-wheeler intended for commercial deliveries.

Parts shortages and certification

Yu said a spring launch had been planned, but the company ran into shortages of chips, memory and circuit board materials, which are also in demand from makers of AI servers. Some parts had to be replaced and requalified through lengthy thermal and vibration testing.

The battery's design, with high power density, two-way power flow and charging at up to 240 watts, did not fit standard e-bike rules. Also worked with certification body UL to develop a clarification standard, and the battery is now fully UL certified.

Customer frustration

Preorder customers on Reddit criticized the delays and the lack of updates. Yu acknowledged the company did not keep early backers informed enough and said communication has improved in recent months. He said very few orders were cancelled. Early deliveries were also hampered by FedEx, so the company switched carriers.

The early launch edition bikes are now shipping, while Yu said the standard and performance versions are coming "super soon."