I bought this for a 2007 Ktm 450 exc, at first I wasn't sure it was working the way it should but once the bike warmed up it seemed to work! I only have one ride with it so far but I can't see any issues in the future.
Seemed to help the throttle response and didn't fix issue 100% but it is better then what was stock. I would recommend.
P.S. the support team at moto sport was over the top, very knowledgeable.
Ive personally ran this on every carbeurated bike ive ever had that they made it for. Cant solve a problem with bog on your bike? Try this part and the right jetting specs and its the closest youll get to fuel injected throttle response and no low end or sudden crack of the throttle bog.
Installed this on my SX450F and it helped the bogging issue a bit but really was expecting more from it.
Woke bike up and sounds richer!
I put this mod on my trx450 and wow could i feel a difference basically when i would get into corners and hit full throttle the quad would bogg this totally fixed the problem now i have to grab on toght to my handle bara because i feel like the quad is about to take off!
I have a 2006 crf250r that was bogging like crazy so I ordered the boyeseen quick shot 2 to see how it would go. After it was on I was amazed. The bogging was gone and the power increase was incredible. Got about 4 hours on it with great results. Only issue is that my valves didn't like it and I bent one due to the power increase. (Valves were stock and 7 years old). Great product already recommended to my friends.
It helped a little but not a complete fix.
I just put this on my bike like an hour ago. After you get the fuel mixture dialed in, you're left with an incredibly snappy throttle response and more power than you'll know what to do with. I didn't even think I had a bogging problem until I put this on! Greatest $90 I have put into my bike.
Installed on my 2011 WR450 and my sons 2006 YZ250F. Must do as instructions say and replace O-ring on older bikes. Once you get to the bolts that attach the bowl to the carburetor the installation is easy. Re-jetting not necessary, but proper jetting overall is a must. It helps with hot starting and does smooth out throttle response. Hard to tell how much performance increases. Based on easier starting and better throttle response it is worth the cost.