Kalkhoff is the largest e-bike manufacturer in Germany by numbers. They have been in the business of building bikes for 100 years in 2019 and have developed their own e-bike drive unit, the powerful Impulse system featuring a big battery. A number of models are also available with a Bosch drive unit (the “.B” models). Kalkhoff bikes generally provide good value for money and are all designed for urban use, with all the essentials like mudguards, racks and lights standard. Most models come in different frame shapes and a large number of sizes. The Endeavour series are Kalkhoff’s sportive city and trekking bikes. The 5.B Advance model features a low stepover height and the powerful Bosch Performance CX drive unit coupled with a 500Wh battery.