The Deore XT M8130 LinkGlide 11-speed Rear Derailleur with Shadow+ technology delights with its smooth and decisive shifting. Roomy chain clearance and stability over rough mountain terrain reduces chain slap and droppage. Designed to integrate with LINKGLIDE cassettes Rear derailleur stabilizer reduces chain slap and improves chain stability Low-profile design is optimized for rough terrain Details: Cage Length SGS/Long Color Black Mount Direct attachment (conventional)/Direct mount compatible Pulley 13t Series Deore XT LinkGlide Generation M8130 Max Low Sprocket 50t Min Low Sprocket 45t Rear Speeds 11 Average Weight 308 grams