i was out riding to day in cleethorpes and, then i heard a crack sound so i looked on my frame every were .finaly i found it, right on the weld of my stem . i rode it the rest of the day didnt mate no sounds or anythink  just rode normal   what parts have you broken your bike ..   i have broken:   bash gaurd about 10 cross overs about 3m hosing booster chain ring pedals magural ever  rotors  ect ... ect ..