must have been a really tight link , was it noisey?? I've seen chains go like that at enduro's but really most were lack of maintenance n neglect , any scott oiler fitted ?? I've got 38500km on original chain n sprockets only because of the oiler , broken chain is very dangerous , crf's are notorious for it plus they bust the main casing where clutch pin fits rendering the engine as usless as an ashtray on a gsxr