E-bike spider designed specifically for Brose motors A spider designed for e-bikes must meet increased demands for durability and compatibility. E-bike spiders need to account for heavier bikes (and therefore greater force transferred to the drivetrain to propel it forward), and be compatible with proprietary brand specifications unique to e-bikes and the manufacturers that supply them. We designed our Spider Brose to be compatible with Brose motors. The Spider Brose is a solid, cold-forged aluminium structure that's been crafted according to Brose's precise specifications and features a clean, geometric design to make it a sophisticated enhancement to any e-bike's overall look.