Which i:SY is right for me?

As a general rule, it's best to try out, try out and try out again!
You will find the right i:SY for you which meets your preferences and requirements.

First of all, you need to know that the basic components are identical in all i:SY models. The difference lies in the different Bosch motors, different gear shifts and drives (chain or toothed belt).



XXL is synonymous with even greater load and even more flexibility. The i:SY XXL models offer excellent riding comfort on any terrain with a load capacity of up to 180 kg total weight. They are also eminently suitable for tall people up to 2.10 m. Shorter riders who weigh more than others (120–150 kg) can also use the XXL where required. However, an adjustment is needed. A shorter stem and handlebars curved further backwards are already incorporated into the XXL Comfort model. Incidentally, all XXL models are fitted with our front carrier as standard.


The XXL E5 model series impresses sporty commuters in mainly urban areas with a 5-speed SHIMANO hub gear containing a toothed-belt drive, all developed especially for e-bikes. This series contains the Bosch Performance Line motor. The E5 ZR F CX model boasts the highest-performing Bosch motor. The Performance Line CX is used in this version. The Comfort versions feature a BySchulz suspension seat post and handlebars with a greater offset, a shorter stem and a larger saddle.

i:SY XXL N3.8

The XXL N3.8 ZR models are equipped with the continuously variable ENVIOLO 3.8 hub and an easy-care toothed-belt drive. Featuring the dynamic Bosch Performance Line motor, it is optimally equipped for use on flat or hilly terrain by frequent riders and pleasure cyclists alike. The XXL N3.8 B is a real head turner with its brown components and its exclusive urban blue.

i:SY XXL R14

Our XXL R14 ZR models are equipped with a 14-speed ROHLOFF hub gear and an easy-care toothed belt drive. The gears are mechanical. The powerful Bosch Performance Line CX motor is built into this model, the perfect companion on challenging varied terrain.


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