BBS02 750W Mid Drive Kit: https://amzn.to/3wudWv4
BBSHD 1000W Mid Drive Kit: https://lunacycle.com/bafang-bbshd-1000w-middrive-kit/
Justin on Endless Sphere forums talking about BBS02 / HD : https://endless-sphere.com/sphere/threads/2019-motor-simulator-mid-drives-and-other-updates.100461/post-1470105