Replacing Bike Parts
I'm bad.
Chain when it stretches past ~12 1/16" for 12 links usually once/year on my roadie and less often on my tri bike because I only ride him in good weather
headset - really really need to because its gummed up and missing a few bearings
cables - 2.5 years on my roadie
cassette - have 4 and rotate them around but never gotten ride of any
bb - not yet
I go more by inspection b/c I'm too lazy to track miles on all my parts, so no specific info.
yet another reason my lbs people love me...when my bike makes a funny noise, I go in, tell them about it, leave my bike. They examine it (I hope), call me a few hours later and say, "you need to replace the blabla; it will cost somuch" and I say okay. I should really know more about the parts. I am embarrassed to say I don't even know where to find the headset or bottom bracket on my bike. It's like my car. As long as it takes me where I am going, and doesn't give me any trouble, I am in ignorant bliss, and when it starts giving me trouble, I am at someone else's mercy.
Taper Naked
When the part is dead, I replace it.
I'm in a flat area, so not a whole ton of shifting. Chains will last about 3k-5k miles (KMC X10SL)
Cassette depends on racing vs. training. Train on SRAM 10 sp, which give me 5-10k miles. Haven't replaced my race cassette (KCNC superlight - 107g) but it only has about 350 miles of use. If you start getting a popping in your chain, like it's skipping between 2 gears, even though your deraileur is aligned properly, you'll probably need to change something.
Cables and housing gets replaced at the beginning of every season.
Headsets don't really get replaced, just opened up, inspected and re-greased when they start crackling/creaking/vibrating. BB is pretty much the same.










In miles, how often do you replace your:
- cassette & chain
- bottom bracket
- headset
- cables
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