RETRO-EXTEND

Retro-Extend version comes with a 30cm frame extension and a removable rear seat making it ideal for carrying a passenger or additional cargo.
It boasts a fully adjustable front suspension fork and it has 48v 250w, 750w and 1000w Bafang rear hub motor for option.
I am sure you will find the one you prefer, choose what you love and love what you choose.

It can not only carry person but also carry goods；
If you want to go outing with your friend or family member, you can install the 2nd seat and also foot pegs are needed to rest passenger's feet；
If you want to go shopping or go travelling, you can install a basket；
Besides that, if you want to do delivery business, it also can help, such as fast food delivery, courier delivery, etc, I am sure you can make a good use of it.