SHIMANO SHADOW RD: low profile design intended for more aggressive riding. Quiet: will not contact chain stay. Super low profile design carries many benefits. Because of its low profile and single tension construction = no hitting chain stay in rough conditions.The result is smooth and silent performance.Features Low profile for improved durability Low profile design saves RD from damage in a narrow passage. Direct routing reduces the risk of snagging. Stronger return spring for more crisp shifting feeling Capacity : GS 33T, SGS 45T Specifications Series Deore XTModel No. RD-M772Pulley Cage GS/SGSSpeeds 9Spring Type Top-NormalMax Front Difference 22T Total Capacity 33T/45TMax Rear Sprocket 34TMin. Rear Sprocket 11TDirect Attachment YesFluoric Coated Link Bushings 4Sealed Bearing Tension Pulley Yes 11T Pulley Yes
