SHIMANO MTB Rear Derailleur

In 2008 Shimano changed the MTB Rear Derailleur calling.

In the past, like XTR M960, XT M760 they have long & short cage.

But many user confused why now 2008 Shimano XTR, XT, LX & Deore only have Long & Med Cage.

Acutally U can read the last code (SGS) is Long Cage, (GS) is Medium Cage, (SS) is Short Cage. So, now like M970 Rear Derailleur they have M970 (SGS) Long Cage, M970 (GS) Medium Cage. They won't have Short Cage in MTB Model.

But U can see Shimano Road parts like Dura Ace 7800 Rear Derailleur having RD-7800 (SS) Short Cage & Rd-7800 (GS) Med Cage