Originally Posted by
acidfast7
You need a torque wrench as that bolt was def tightened beyond its specs for that to happen. Or it was a low-quality bolt or it was defective which we usually get sorted out on the line if it's not a spec'd bolt like it should be.
My money is on the first and an over-tightening monkey.
Yeah, that makes sense. I've had the bike about 5 years, but had a new saddle put on it about a year ago. I'll try it with a torque wrench after I get a new bolt and spacer washer.