During the summer of 2023 Bosch introduced a new motor, the Performance Line SX. This is Bosch’s lightest drive unit to date, weighing only 2.0kg (4.4 lbs.). What makes the Bosch Performance Line SX so special isn’t just that it is light; it is also powerful. At peak power output it produces 600W.
Light is good for
performance-oriented e-bikes such as eMTBs, road and gravel e-bikes, but light only gets us so far. There are other lightweight motors out there. The Brose-made Specialized SL 1.2 motor weighs just 1.95kg (4.3 lbs.) and produces 320W at peak. The TQ HPR 50 weighs a tiny bit less than the Specialized, at 1.85kg (4.1 lbs.) and produces nearly as much wattage at peak: 300. The Fazua Ride 60 improves on both of those by running in the same neighborhood weight-wise (1.96kg), but producing a more
muscular 450W.