SRAM X01 Eagle Type 3 12 Speed Rear Derailleur - Lunar Grey - 12 Speed PLP|Riding Style You will then need to

You will then need to pair it with the correct spring(sold separately) to match your weight and riding style

The oversized hollow axles and springs are made from steel

Don't be left behind on your ride

Cassette compatibility: Compatible with 5-12 speed cassettes and freewheels

SRAM X01 Eagle Type 3 12 Speed Rear Derailleur - Lunar Grey - 12 Speed PLP|Riding Style You will then need toThe burly X01 Eagle derailleur features all of the tech that's packed into SRAM's brilliant X HORIZON derailleur range and the latest models (Lunar Grey, Red) benefit from the recent tweaks to the cage architecture to improve chain retention and increase the range to work with the new 10 52t cassettes. The X01 Eagle only misses out on a couple of features compared to the top of the line XX1 Eagle. The X01 runs a full alloy cage and standard bearings