Originally Posted by
Biketiger
The only thing I can add is this: If the seatpost is 27.2 you have SLX, if it's 27.0 it will be SPX.
Either way you should be able to see helix spirals in the bottom portion of seat tube. Smooth seat tube without the ribs would be SL or SP.
The seatpost is indeed 27.2. I will report back in a few days to.update on the bottom of seat tube findings.