This gruopset came off of a really nice trek 820 antelope with c10 shimano equipment Parts could use some light scrubbing and a polish but perform like excellent. Make an offer I don’t need them or want them!! The crank arms are 170mm with stamped crank arms in good shape Upgrade your trek 800! Make your old 820 new again! Kit includes: -3x7 shifter gunked up but working -Rear derailleur -Front derailleur -Rear cassette -Chain checked and In like new shape -new master link -Crankset original stamped steel made in Japan 170mm Not included are the brake levers however if you want them I will include them if purchased before September 1st