What eBike brands have the best warranty?

Specialized offers a lifetime frame warranty on most models. Trek provides a lifetime frame warranty and 2-year component coverage. Rad Power Bikes offers a 1-year warranty (2 years on the frame). Aventon provides a 2-year warranty. Most mid-drive motor systems (Bosch, Shimano STEPS) have a 2-4 year warranty. When buying online, verify that the brand has US-based customer service and readily available replacement parts.