Was reccomended this pipe by a friend and I couldn’t be happier with my purchase. From what I’ve seen, the FMF pipes for the yz250 sound nice in the high revs, but the stock pipe is crispy down low. The pro circuit is both of those which makes the sound incredible. There’s also a noticable power gain, and I did not have to rejet the bike, it is still stock. Pro circuit reccomends to go down a few sizes on the main and pilot but I’d rather keep it rich, and it still runs the same. Overall great pipe, the only downside is that it may be a little too loud for your neighbors lol. The stock pipe’s idle was definitely much quieter.
2 авг 2023
