Went out on a ride today, and on a particularly steep incline lost control of the front wheel, popped it and fell backwards. Managed to bail from the bike in time and land on two feet, but the bike fell on the side a little hard.
The rear hydraulic disc brake started making a squeal-grind noise after that when I applied the brakes. The wheel spins freely when brake is released - there's no rubbing on the rotor, and the stopping power is still there, just the huge amount of noise.
I didn't have time to diagnose it on the trail, so rode forward using just the front brake unless absolutely necessary to engage both.
What could it be?
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