Product Description XT RD-M8120 rear derailleur by Shimano - smooth and safe shifting everywhere The Shimano XT RD-M8120 rear derailleur lets you shift a 10-45 cassette in a 1x12-speed or 2x12-speed system. It stands for precise and fast gear changes within a huge transmission range. Special features of this rear derailleur include 13-tooth sprockets and a rubber damper, which minimises noise and improves comfort. In addition, Shimano Shadow RD+ technology significantly increases chain retention. Guidelines for Replacing E-bike Components:Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance. Specifications:Series:Deore XT M8100Application:Enduro, All Mountain, Cross CountryGearing:12-speedMount:standardCapacity:45-toothCompatibility:Shimano MTB 12-speedCompatibility - Chains:HG 12-speedTechnical Information:Derailleur Pulleys:13-toothOuter Cage Material:aluminiumInner Cage Material:aluminiumOther Materials:aluminium, stainless steel, steel, composite material (GFRP)Compatibility:MTB 1x12-speed / 2x12-speed: Shifter:SL-M9100, SL-M8100, SL-M7100, SL-M6100Cassette: 10-45 t: CS-M9101-12, CS-M9100-12, CS-M8100-12, CS-M7100-12Chain:CN-M9100, CN-M8100, CN-M7100, CN-M6100E-Bike:EP8 EP801, EP8 EP800 for MTB / Touring, STEPS E8080Features:fast and precise shifting performance optimised for each trailfast, recoil free shiftinglower rear derailleur and chain tension in small gearslarger derailleur pulleysstable drivetrain on rough terrainlow profiled with Shadow RD+painted cage plates7 pivot bushings, fluorine-coatedderailleur pulley bearings sealedTechnology:Shadow RD+ Shadow Plus rear derailleurs are just as low-profile as Shimano's Shadow rear derailleurs. In addition, a stabilizer with on/off switch is used to reduce chain slap and thus counteract chain drop. At the same time, this results in a quieter drive. Weight is also saved compared to other chain restraint devices. Models:long: Cage Length:SGSMax. Largest Sprocket Teeth:45-toothMin. Largest Sprocket Teeth:45-toothMax. Smallest Sprocket Teeth:10-toothMin. Smallest Sprocket Teeth:10-toothMax. Chainring Difference:10-toothTotal Capacity:45-toothManufacturer Number:I-RDM8120SGSContents:1 x Shimano XT RD-M8120 Shadow+ rear derailleur Weight: black | 13 teeth: 287 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com