Initially I was against purchasing a gnarly due to issues with. The old one on my bike. However, I couldn't beat the price so I took a chance. The fit was second to none and fell right into place. It does exactly what it says, there's a noticeable increase in horsepower when I'm trying to. Tractor. Through the rough stuff. Still trying to pin down the sweet spot in the jetting but very impressed. well worth the asking price. I also found out that the reason for the previous problem pipe ..... the previous owner forced the wrong pipe on the bike, hence the problem with the jetting. .