105 RD-5501-SS-L or Short rear derailleur

RD-5501-SS-L Rear Derailleur (For Double Crankset) - Black - RD-5501-SS 9 Speed Compatible: Precision shifting for narrow-spaced 9-speed cassette sprockets. 11-Tooth Pulleys: Alternating contact with chain links reduces wear, larger pulley diameter runs smoother, lasts longer.

RD-5501-SS-S Rear Derailleur (For Double Crankset) - Silver - RD-5501-SS 9 Speed Compatible: Precision shifting for narrow-spaced 9-speed cassette sprockets. 11-Tooth Pulleys: Alternating contact with chain links reduces wear, larger pulley diameter runs smoother, lasts longer.

Specifications Speeds 9-Speed Max Sprocket 27T Min Sprocket 11T Front Difference 22T Total Capacity 37T Parallelogram Spring Adjuster no Guide Pulley sintered alloy bushing Tension Pulley sintered alloy bushing 11T Pulley yes Bracket Body aluminum/clear coated Bracket Body Pivot Seal no Plate Body aluminum/clear coated Plate Body Pivot Seal no Outer Link aluminum/clear coated Inner Link steel/pearl bright Sealed Link Pins outer link Link Pin Bushings fluorine coated (2) Outer Plate aluminum/annodized Inner Plate aluminum/barrel Weight 228g

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105 RD-5501-SS-L or Short rear derailleur