Shimano XT M8000 Single Narrow Wide ChainringShimano's XT M8000 Single Narrow Wide Chainring benefits from Shimano's Dynamic Chain Engagement (DCE) technology, which is used to hold the chain and help prevent chain jump out. This is achieved with a broader and taller tooth profile used in conjunction with a special hooked leading edge.This all aids holding the chain firmly on uneven terrain, increases durability, and keeps chain noise and drag to a minimum.Features: Hollow gear construction for optimised rigidity, lightweight and durability Durable teeth using a plated steel construction supported by a carbon composite (CFRP) carrier body Dyna-Sys11 HG-X11 11-speed chain compatibleA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.