My question to you all is this. Are all of the pas sensors that attach to the crank the same and also is there one general size for a crank puller and tools needed to replace that sensor. I have a chinese cyrusher and where the expensive components are decent the less expensive component are sub par for my liking. They want $40 for a sensor and it looks they are $10-$15 online. Can I just buy a sensor and crank puller set online and be good to go, or are there different sizes. Yep first ebike, and I bought it when I had brain surgery 2.5 years ago. I am doing much better and I am ready to jump in. So I could really use a little bit help as a newbie to ebiking. Its a big ol 1000w fatbike, I dont think the sensor probably cares much about any of that though huh?