I have looked around for the answer to this and have been unable to find it.
I have a Trek 8000 mtb, and am upgrading from 8 to 9 speed.
Here is my current 8 speed drivetrain:
Crank: Deore LX FC-M569(4 arm roughly 2000)
Chain: Original with bike - IG
FrontDer: XT (~2000)
RearDer: Deore LX RD-M567 (original with bike 97)
Cassette: 8-speed Hyperglide-C (original 97)
RearHub: LX FH-M565 (original)
Shifters: XT 9 speed
As you can see, I have already replaced my shifters because I found a good deal on them.
My question is what do I need to buy to have my bike working well with mega-9. I know I will need a cassette and chain, but what else?
Will a 9-speed cassette fit onto my LX rear hub? Should I go with an XT, or will a LX suffice?
Is a new rear der necessary, or should my LX work fine?
I am grateful for any suggestions as I am trying to sort through all of this, and somewhat tired of sloppy shifting due to my 9 speed XT's with my 8 speed drivetrain .