hey mate sorry for the late reply! pretty sure its a truvativ XX guide. its bb mounted and pretty solid. bit noisy when shifting but very smooth and ive not had the chain off once!
Yeh I'm trying to cut down too! Got a bit of interest and had a few offers but tbh I might keep it and buy an xc rig for longer rides. I like the fact it's a small on the downs but if you're in the saddle for 5-6 hours a day it's a bit too short!
Hope you find one as they are great! If I can find a medium at a good price I'd be happy to let this go to you at the same price. Cheapest I can find at the minute is 1100 though