2stroke pipe comparisons

I threw a pro circuit pipe and 304 silencer on my ktm and gave some on top.

I had a pro circuit pipe and R 304 silencer on my 07 RM 250. Compared to the stocker is smoothed out the power going from bottom to mid and pulled well into the top end. I preferred it over the stocker. From past experience pro circuit seem to focus on mid to top pipes where as the fmf fatty is aimed at boosting the standard power curve throughout the rev range, the gnarly is for bottom end and sst is mid to top. Bill's also make a good pipe that I have found to perform similar to pro circuit

On the Honda it's hard to beat the stocker, but I have the PC 304 for top end...I've ridden some bikes with shorty's too, more bottom and sounds better IMO..

The '05 stocker is nice, but I went Gnarly for offroad racing along with 14 toother up front.

I am a big fan of Mitch Payton's vision and purpose - I run Pro Circuit on my YZs.

older pic of my 05 play bike
- pc w/ 305
solid power everywhere, especially after adding a 10oz ffw

I did the PC pipe & muffler, it hit lower an revved out with more meat. I also did the 8oz flywheel, I had an SST on it before, the SST was smooth, almost no hit. I like the hit for jumping & clearing stuff. The RM works well with a flywheel weight.