Best current price£149.00from Merlin Cycles
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Merlin Cycles£149.00Visit shop Shimano Dark Grey/Black Xtr M9100 Rear Derailleur -12 Speed - / / Medium Cage Gs / 11-12 Speed
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This Shimano XTR rear derailleur is for serious mountain bikers seeking peak shifting performance and reliability on challenging terrain. Its key benefit is the Shadow Plus technology, which drastically reduces chain slap for a quieter, more stable ride. A potential caveat is its premium nature, requiring proper setup for optimal function.
| Model Part Number | RDM9100GS |
|---|---|
| Brand | SHIMANO |
Shadow Plus technology significantly reduces chain slap and bounce on rough terrain by employing a clutch mechanism, leading to a quieter and more stable ride.
No, this derailleur is specifically designed for 12-speed drivetrains and is not compatible with 11-speed systems.
Use a degreaser and a brush to clean the main body and jockey wheels. Rinse with water and dry thoroughly. Lubricate pivot points and jockey wheels after cleaning.
The cage length determines the derailleur's capacity for chain wrap, which influences the range of cassette cogs it can accommodate. A medium cage is suitable for a wide range of common gear setups.
While some non-Shimano shifters might offer limited compatibility, it is highly recommended to use a compatible Shimano 12-speed shifter for guaranteed performance and proper shifting ratios.
Lubricate the chain regularly. The derailleur's pivot points and pulley wheels should be lubricated periodically, especially after washing or riding in wet conditions.
Check cable tension and routing for any binding. Ensure the derailleur is properly aligned and the b-tension screw is correctly set. Verify compatibility with shifter and cassette.
Ensure the Shadow Plus clutch is engaged (switch in the 'ON' position). Check that the derailleur's tension spring is functioning correctly and not obstructed. Verify chain length is appropriate.
Adjust the b-tension screw to increase the gap between the upper pulley and the cassette cogs. Ensure the derailleur is securely mounted to the derailleur hanger.
Check the low limit screw setting. Ensure the cable is properly seated in the shifter and derailleur. Verify chain and cassette wear.
Setup: Proper installation is crucial for optimal performance. Ensure the derailleur is correctly aligned with the cassette and the b-tension screw is properly adjusted according to Shimano's guidelines. Use a compatible 12-speed shifter and chain for best results.
Compatibility: This derailleur is designed for 12-speed drivetrains. It is recommended to use it with a compatible Shimano 12-speed shifter, cassette, and chain for guaranteed performance. Consult Shimano's compatibility charts for specific component pairings.
Care: Keep the derailleur clean by regularly washing it with degreaser and water. Periodically lubricate the jockey wheels and pivot points. Inspect the clutch mechanism and ensure the stabilizing switch is functioning correctly. Avoid excessive force when cleaning or adjusting.
