Every e-bike is built on one of two frame shapes: a step-through, with a low or dropped top tube you swing a leg through, or a crossbar, with the traditional high top tube you swing a leg over. It is a bigger decision than it looks.
Step-through: easy on, easy off
The low frame means you step through rather than over, which is easier in work clothes, with a rack loaded, or if hips and knees are not what they were. It is more stable to mount and dismount, especially at lights. It is why almost every Dutch-style and commuter e-bike uses it, and it is not just for older riders, it is simply the most practical city shape.
Crossbar: stiffer and sportier
A traditional high top tube makes the frame stiffer, which some riders feel as sharper, more planted handling, particularly at speed or under load off-road. It is the default on electric mountain bikes and sportier road-style e-bikes for that reason. The trade-off is a higher, less convenient mount.
Which should you choose
- City, commuting, errands, relaxed riding: step-through, almost always
- Trail riding, sporty road riding, maximum stiffness: crossbar
- Shared between riders of different heights: step-through is more accommodating
- Carrying cargo or a child seat: step-through makes loading and mounting easier