Shimano XTR Rear Derailleur 12s Medium cage Article number: IRDM9100GS Product Description The XTR RD-M9100 rear derailleur by Shimano - For 1x drivetrains The XTR RD-M9100 rear derailleur was designed by Shimano exclusively for 1x12-speed drivetrains. It has enlarged 13-tooth derailleur pulleys for smoother operation and an additional stop on the swing arm that reduces noise. Of course, the Shadow+ damping technology is also used here, where a stabilizer counteracts sagging, slapping and dropping of the chain. Several pieces of the RD-M9100 are made out of a lightweight carbon. The XTR rear derailleur is available in two versions, namely with a shorter cage (GS) for 10-45 cassettes and with a long cage (SGS), which can shift 10-51 cassettes. 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: XTR M9100 Application: Cross Country, Enduro Gearing: 12-speed Mount: standard Capacity: 35 tooth (short), 41 tooth (long) Compatibility: Shimano MTB 12-speed Compatibility - Chains: HG 12-speed (e.g. CN-M9100) Technical Information: Derailleur Pulleys: 13-tooth Outer Cage Material: carbon (CFRP) Inner Cage Material: Aluminium Other Materials: aluminium, stainless steel, carbon (CFRP) Compatibility: MTB 1x12-speed: Shifter: SL-M9100, SL-M8100, SL-M7100, SL-M6100 Cassette: short / GS: 10-45 T: CS-M9101-12, CS-M9100-12, CS-M8100-12, CS-M7100-12 long / SGS: 10-51 T: CS-M9101-12, CS-M9100-12, CS-M8100-12, CS-M7100-12, CS-M6100-12 Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100 E-Bike: EP8 EP800 for MTB / City & Touring, STEPS E8080 Features: lower preload in the lower gears to avoid too high of a chain tension additional stop on the shift rocker for low-noise drivetrain larger 13 T upper pulley GS version with 28 mm more ground clearance cage plates painted/anodised 8 pivot bushings, fluorine-coated derailleur pulley bearings sealed Technology: 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: short: Cage Length: GS Max. Largest Sprocket Teeth: 45-tooth Min. Largest Sprocket Teeth: 45-tooth Max. Smallest Sprocket Teeth: 10-tooth Min. Smallest Sprocket Teeth: 10-tooth Max. Chainring Difference: 0-tooth Total Capacity: 35-tooth Manufacturer Number: I-RDM9100GS long: Cage Length: SGS Max. Largest Sprocket Teeth: 51-tooth Min. Largest Sprocket Teeth: 51-tooth Max. Smallest Sprocket Teeth: 10-tooth Min. Smallest Sprocket Teeth: 10-tooth Max. Chainring Difference: 0-tooth Total Capacity: 41-tooth Manufacturer Number: I-RDM9100SGS Contents: 1 x Shimano XTR RD-M9100 Shadow+ rear derailleur Weight: grey | short: 237 g grey | long: 240 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com