I like mine in the 2 x 9 configuration of 27T for the small ring and 40T for the large ring. The only caveat with those is you have to have a 110/74mm BCD crank or spider (not a problem if you pick up an older pair of appropriate Race Face cranks or get Middleburn cranks which have the option of a 110/74 spider). The 3 x 9 Q-Rings come in XTR and non-XTR 4 bolt pattern 104/64mm BCD.ftajiri said:somelse already uses on 29er? is this good for this intent?
Too bad they're so darn expensive.:madman: