Shimano Deore Shadow M592 Rear Derailleur

This is an SGS, Black, mountain bike rear derailleur, that is ideal for trail or all mountain biking.
It has a top normal spring design that, when in high gear, has a profile 15mm less than a traditional rear derailleur.
The derailleur body also has a stronger spring, which provides greater stability and a redesigned bracket axle which keeps the derailleur body from contacting the chainstay.