Yeah, I have an aftermarket on an arctic cat quads. Would have rebuilt the OEM but it was in terrible shape. Couldn't get it apart, all the screws were seized up with stripped heads on them. Drilled them out and the jets and were the same way. The aftermarket carb is working perfectly. The pilot screw was waaaaaaaay off so I adjusted that to spec and then installed it. Smooth idle and lots of power. Very satisfied with it!