SRAM XX1 Eagle Type 3 12 Speed Rear Derailleur - Lunar Grey - 12 Speed YGroup_7033414320173 Shimano SH51 cleats are a

Shimano SH51 cleats are a single-release which are slightly more difficult to release compared to the multi-release SM-SH56 cleat

Drop your saddle to a mid-stroke position at least 75mm below full extension

The Box One Prime 9 rear derailleur is Box's top of the range Prime 9 offering with all the bells and whistles

Perfect for the home shop of the serious amateur bike mechanic

SRAM XX1 Eagle Type 3 12 Speed Rear Derailleur - Lunar Grey - 12 Speed YGroup_7033414320173 Shimano SH51 cleats are aThe 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