The Shimano Deore M592 Shadow Rear Derailleur is ideal for trail or all mountain biking. This Rear mech benefits from a top normal spring design and in high gear, the derailleur has a profile that is a 15mm less than a traditional rear derailleur. The derailleur body has a stronger spring providing greater stability and the redesigned bracket axle keeps the derailleur body from contacting the chainstay. Features: • Top normal spring design • Direct cable routing • Stronger spring • Redesigned bracket axle • SGS Black