Large: Measures 482

Sealing method: Contains cutting-edge molecules

including XD and Shimano 12 speed

Not so tight that you'll get confused for a roadie

The adjustable locating shelf means it works on almost every chain

SRAM XX1 Eagle Type 3 12 Speed Rear Derailleur - Lunar Grey - 12 Speed Envelope Shipping Large: Measures 482The top of the line XX1 Eagle derailleur is the next evolution of SRAM's brilliant X HORIZON derailleur range. The cage on the latest models (Lunar Grey) has been tweaked slightly to increase the range to work with 10 52t cassettes. The XX1 Eagle features a couple of upgrades over its little brother the X01 Eagle. The Carbon Fibre outer cage is the most noticeable change, while there are also upgraded stainless steel pulley bearings hiding in there