FMF adds the Powercore 2 Shorty silencer to its arsenal of 2-stroke exhaust options because FMF is brand that knows how to maximize power for any terrain.
The FMF Powercore 2 Shorty silencer has a shortened inner core length and canister. The shorter overall length allows for the exhaust gases to exit quicker giving the Powercore 2 Shorty silencer better performance on the bottom to mid range of the power band.
The design of the FMF Powercore 2 Shorty silencer makes it ideal for tight tracks and supercross riding.
FMF makes it easy to perform maintenance on the Powercore 2 Shorty silencer by using removable bolts to break it down.
I put this on my RM125. I honestly didn't think it would make the bike feel much different. But it made the 125 feel like a different bike. Before it had no low end power and a kind of jittery transfer when I hit the power band. Now, I can putt it around a lot easier in 1st gear and the power delivery is sooo much better when it hits the power band. I highly recommend this product and I can't find a single thing to complain about. It's worth so much more than the price!!!
Fit's great, looks awesome, sounds good, only issue I see is that they don't include the two rubber mounting grommets that attach to the rear frame, I don't think that's too much to ask for two pieces of rubber.
We do not offer that specific combo for sale on the website as most times the Gnarly pipe is paired with the turbine core for off road use. If you can give us a call though, we can absolutely put that combo together for you over the phone.
Depending what bike it is for, FMF has a the jetting specs available on their website. You can call them directly with the model of your bike and location and they can provide their recommended jetting. FMF can be reached at (310) 631-4363.
Unfortunately FMF does not offer this Powercore 2 Shorty silencer for your 1994 YZ250. They do offer their standard Powercore 2 though. All you will need to do is transfer your rubber grommets from the stock exhaust and it will be a direct bolt-on.