KHE Park Tires - Mine got about 5 holes in it after about... 5 weeks? It was on the front aswell.
Federal Freecoaster - The bearings in my old one died every week. Not over exaggerating.
Revenge Industries Brake - Seized up and would not come off the frame. It resulted in me losing a brake mount...
Maxxis Grifter - Mine blew out after a week.
Fit ECCD - The rails wobble in the actual seat, it makes bad noises.
Fly Seatposts - Mine keeps coming loose, ive even tried using old handlebars to get alot of leverage and locktight but it still comes loose.