I'm at the 130 page mark too. The thesis is nearly finished, just got a few more pages to write for the intro (about 10 I reckon), it's eight chapters, that's five for results (one chapter is incredibly short), one for the intro, summary chapter and materials and methods. My subject area is cell biology.
A few people have said that I've got too many chapters, but I say " if it feels good, do it!"