They make power I don't get how anybody says exhaust doesn't make any power when the Dyno sheet isn't lying. Barker isn't going to risk his rep by putting out a rigged Dyno sheet. It works my buddy wrote the map for barker for the maverick and is now doing the xp1000 as we speak.Why all the Barker hate? They're the only ones to supply a proven dyno sheet, plus an independent dyno test posted on here showed gains as well. Yet some people still say they don't make power? I don't get it.
Barker is not the pipe in the yamaha 4 stroke world. I have and built one of the biggest n/a raptors out there. It is a 787 bore and makes 92 hp. I had barkers, went to dmc duals and gained 2 hp. Then went to a under tail dual monster set up, gained another 3 hp. Over 100 dyno runs on a fully programmed msd ignition to prove this. My bike is currently on the cover of sand sports magazine. Plus barkers fit and finish of the rubber clamps, is not up to expectations. Look at the dyno and see if it is laid over speed? If you know how a dyno works, you will then understand their 10hp claim. I have seen Ron woods systems and from what I know about him and motors, I would feel confident that it makes more power than barkers. Please someone prove me wrong.Barker is THE pipe in the Yamaha 4 stroke world. They know what works and build awesome quality stuff.