Wrangler - If you are starting from scratch (you don't have a motorcycle license from your home country), the head over to Junti in Hongkou District and they will provide you with course registration and point you in the right direction to get your physical exam - The SH Driver's License Center which is also in Hongkou.

The 2-wheel moto license will cost you 750元 (E照 二轮摩托车) + 450元 to rent a bike for the practical exam.
Whole process from exam to license will take about 8weeks.

Shanghai Junti Qiche Jiashi Peixun
http://www.shjtpx.com/
21-5677-0185

地 址：上海市虹口区广中路444号
邮 编：200083
报名热线：56770185 56652872*4180
投诉电话：56659531
邮箱地址：jtpx@shjtpx.com

* Alternatively there's another center out near Xinzhuang you can check out if that's more convenient.

Good Luck!