Originally posted by Cecil
Yes. It is usually a good idea to replace the set:
Front, Rear and Chain.
Try a different combo...
This really change the dynamic of the bike.
I went from a 17 / 40 combo to a 16 / 40 combo... pretty decent wheelie increase.
Going to a 16 / 42... anticipating lots more wheelie-ability.
However, the top-end will suffer.
yeah i'm going to keep what the previous owner did -1 up +2 rear. give pretty good pick up. some dude doing -1 +7!!!