Originally Posted by icecyc1

Just dyno'd these pistons tonight. Zero difference in the Compression:Rebound ratio. As you can see in the plots, they are pretty much symmetrical in compression as they are in rebound. I tested with the taper side down, and the taper side up and it made no difference. (The Flat Down was tested second, so the oil may have warmed up a little, resulting in lower viscosity oil which is why you see a slightly lower force).


cheers