Shimano SLX Rear Derailleur M7100 tubes The MotionControlDNA damper is new

The MotionControlDNA damper is new for 2012

5") and 4 shorter(13")

stiff and shaped for more control over your bike

You could even fluff it and say its more aerodynamic

Shimano SLX Rear Derailleur M7100 tubes The MotionControlDNA damper is newShimano SLX M7100 rear derailleur offers precision in shifts under load and when you are gassed. Adjustable clutch system minimises slap and noise. Works on Shimano's 12 speed wide range cassettes, you could run on some other brand but you won't get the full benefits of the group. It will handle a 10 51t range cassette and is also recommended to run with a proper Shimano Hyperglide+ chain. As a spare, replacement or upgrade. 12speed 316g Made in Japan