The worn parts I'm replacing are a 42/34/24 crankset with 170mm arms and a 68x118 bottom bracket. I'd prefer something with replaceable chain rings.
This is for an older 21 speed Trek MTB which has all the original Shimano components. I also need an 11-28 Shimano cassette, but they're $10 new at Nashbar. If you have one you want to get rid of I may be interested, but $10 for a brand new part is hard to beat.
