Originally Posted by blamp28

Which shifters? a little more specifics would help. Genrally speaking, the shifters need little if any attention unless ridden in wet conditions. I have a set of Tiagra 9 speed brifters with around 10,000 miles on them. The right hand/rear shifter began acting up around 7500 miles. I gave it the WD40 bath and nursed it along for a few hundred miles and then replaced it. Not a bad performance for lower end shifters as far as i'm concerned. If we're talking off road equipment, I'm not a fan of Shimano's off road offerings so I can't help there. I found thier stuff to be a bit delicate for my liking but the road stuff is great.