
BIMAS — 2 Wheeler Cargo Ebike
A custom-designed two-wheel cargo ebike for Dutch manufacturer BIMAS — modular front cargo frame, Bafang M510 mid-motor, extended battery under the cargo floor, and a bespoke cable steering system.
BIMAS is an ebike manufacturer built around a commitment to functional, reliable, ergonomic, and eco-friendly bicycles. When they set out to develop a two-wheel cargo ebike, the brief was clear: functionality, durability, and quality — at a price point that could actually reach the market. The challenge was designing a custom cargo architecture that could be produced affordably while offering the modularity that different riders and use cases demand.
ZÆT led the full product design and engineering process, developing a custom rear frame specifically designed for affordable manufacturing alongside a modular front cargo frame available in long and short versions — both interchangeable through just three bolts.
The drivetrain pairs the Bafang M510 mid-motor with a Vestel In-Tube Battery integrated cleanly into the frame. A secondary battery can be added beneath the cargo floor, extending range for heavier use. The cargo frame is available in long and short configurations to suit personal preferences — both versions swap via the same three-bolt connection between the two frame sections.
One of the most technically demanding elements was the cable steering system. Because the front cargo frame extends significantly ahead of the rider, standard steering geometry doesn't translate. ZÆT developed a custom cable steering solution to deliver the optimal steering experience across both cargo frame lengths.
How ZÆT was involved
Define Direction
· Market positioning
· Use-case definition
· Modular cargo frame concept
· Commercial feasibility
Build the Foundation
· Custom rear frame design
· Modular front cargo frame
· Bafang M510 mid-motor integration
· Secondary battery extension
· Custom cable steering system developed
· Full CAD development
Execute and Launch
· Production sample coordination
· Supplier sourcing for custom frame components
· BOM development and production cost analysis
· Product prototyping and ride validation
The Result







