You really need two people to put them on. Unbolt the airbox, put the stock exaust clamp on thet stinger, then run some silicone where they connect and have a buddie bolt the silencer in place and pull the airbox out of the pipe clamps way. Slide it on there and tightend the shit out of them. I did a couple test to see which way the pipe couplers were going to go, some are on backwards because of the tight fit. Took me about 8 hours for the removing, installing, and the first jetting I tryed. BTW I used the stock pipe clamp that was closest to the silencer (the one that looks like is woven). Once you get the pipes on and ride it, its worth all the trobles .