RE: 25 size bipe
Mine is black and grey.
I also picked up a pitts muffler to fit my OS .32. It made for a nice installation, though I had to move the pressure tap to another part of the muffler. I also needed nose weight, but I didn't get the battery as far forward as I should have. It weighs about 3.5lbs, but flys "light" and has lots and lots of vertical.