Lightech makes a conversion adaptor for GP shift. It's a bolt-on bellcrank adapter for the rearsets to reverse the pedal direction. Because it's bolt-on, you should be able to remove that part of it and go back to the street pattern. Assuming the original connecting rod from the QS sensor to the pedal can be reinstalled to connect it after the bellcrank rod is removed. I'm not sure why you would want to do that after using the GP pattern , but it should be pretty straight-forward like that.I've bought a 2016 with lightech rearsets. They have the race shift part installed. I've not ridden the bike yet & never used race shift (track bike, have to wait until the spring). I hope that if I can't get on with it all I have to do is remove the additional linkage in the gear shift. Does anyone know for sure?