hi im 6'4'' and 295 lbs i live im minnasota and ride my bike year round. so as you could imagine my bikes have issues. plus i ride long distances. so i was just wondering if there were any super heavy duty parts ie cranksets. derailures axles etc that are not totally expensive(still in hs). my mt bike before it got ripped off had gone through 4 rear derailures and one front one, 8 chians, 2 rear cog assemblys and about 25 broken spokes. all becouse i was doing something dumb or it was really cold (broke the spring in my rear derailure when it was 35 below and cracked one in half when it was 28 below).so its not like it was the manifactures fault.