Shadow Plus Rear Derailleur A great new addition last summer from Shimano has been getting rave reviews in the mtb components  industry. Shimano took its existing line of the XTR rear derailleur and added a  friction clutch that works in one direction, and only engages when  the derailleur’s cage and lower pulley try to move more

read more: Rear Derailleur | Shimano XTR Shadow Plus