These are proprietary pulleys made for this application only.
(depending on the application)
This mid drive for electric bikes is modular and adjustable. The motor plate can be rotated in relation to the mounting foot. Also, the jackshaft and its supporting bearing tube can be made longer for greater offset if required. One example of this is for the Catrike line of tadpole trikes. Other applications require an additional offset. This is easily achieved with this drive system. Contact us directly for further information.
The V4 drive comes with a threaded output adaptor to mount a standard BMX freewheel. This allows the electric system to freewheel when not engaged. We stock both standard adaptors for 16 tooth freewheels and micro adaptors for tiny 13 tooth freewheels.
This protects the system, both the mechanical components and electronic components, from overload due to the high torque these high efficiency motors are capable of.