Being my first bike I’m not 100% sure how long the rear sprockets last. Especially since I use about 3 of them 90% of the time.
I’ve got over 5000 miles on the bike and the 105 cassette is original. I’ve changed the chain once and probably need to do it again. I keep my stuff CLEAN.
How many miles do guys get on a cassette?
Thanks.
I’ve got a 105 cassette with over 10,000 miles on it
jaretj
.
Well, eventually it’ll begin to shift a little strangely caused by worn out teeth on the cogs: you might find it won’t stay in a particular gear, slipping between it and another gear and then back. If it’s not a bent rear-d hanger, then it’s most likely a worn out cassette. Cassettes wear out most quickly with worn chains–by changing your chain out often you’ve prolonged the life of the cassette.
When you change the cassette out, be sure to also change the chain at the same time.
Good luck!
*Edited for spelling
Thank you. Yes my shifting is getting quite crappy…and wanting to jump out of gear at times.
I want to say my chain probably only has 1500 miles, but it must be time. Maybe 1500 isn’t all that low for a chain either. It’s an ultegra chain.
You could easily get 10,000 to 20,000 miles out of that cassette, unless you shift like the typical triathlete. In that case, 1,000 to 2,000 miles.
How’s a typical triathlete shift?
It sounds like this:
crkcryunckdienfdkd8&#&#*&#I%$&#%$*WER#*IR$OIR$WER-cachunk-cachunk-cachunk-BANG
.
I have found that if you are good about keeping a clean chain and replacing when that is worn, your cassettes can last for as long as you need them.
I’ve easily gotten 20k out of SRAM 1070 cassettes and 105 cassettes.
10K+ miles easily. A jumping chain most likely is the chain itself, your derailleur cable adjustment (or stretched cables), or a dirty cassette. Take the cassette apart and clean each ring thoroughly.
I replaced my last 105 cassette at about 15K miles and I’ve got well over 20K miles on my front crank (105 as well).
My casette is always kept shiny clean. I actually take it apart every month or 2 and clean every sprocket.
Maybe it’s just my chain. 2-3000 miles maybe on that. Or my derailleur could need a tweak I guess.
And apparently I don’t shift like a triathlete. When in tune it’s nice and crisp 
I run all dura ace and I clean my chain every ride, pull the cassette every 200 miles or earlier when dirty. I apply liberal oil and use an air compressor to blow off dirt and excess oil every ride. The entire bike gets wiped down for the next ride. I replace the chain every 2500-3000 miles cassette around 5000 and the crank rings every 5-6000
I rode over 10k on my main bike this year alone… I love my bikes
I go through tires a lot though 
I have found that if you are good about keeping a clean chain and replacing when that is worn, your cassettes can last for as long as you need them.
Agreed.
With regular and appropriate changes in chains and the usual swapping around of wheels and cassettes - I find that cassettes can last a very long time.