it bolts to the derailleur hanger. your rock has a hanger.airrick said:thanks alot, but i have 2 questions; it has this thing that says it bolts to the derailer, do all bikes have a derailer, and, which size would you reccomend: 95mm,104mm, or 110mm?
sorry im being ignorant
I'm pretty lame when it comes to bikes, and I've found that having someone on hand who knows what they're doing is invaluable. I suggest you look around your area (LBS?) for someone who can show you the ropes. You may save a ton of frustration.airrick said:is this a job i could do myself (a person with basic knowhow and brainpower)?