The emergency has been sorted, so I'm alright for thursday but I still need some new jockey wheels for my mech.
I'm looking at BBB Roller Boys but I don't know which ones I need, it's confusing me a bit and I'm pretty decent with techy stuff.
I've got a SRAM X9 9 speed mech but I'm not sure on the year. It uses bearings in the lower jockey wheel and bushings in the upper.

