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12 Speed Shimano Rear Derailleur Adjustment.


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On the 12 speed rear derailleurs, adjusting the distance between the guide pulley and the 10-51T cassette is much more crucial, than on the older drivetrains, especially those with "small" cassettes, like 11-42T. Here's how to make it:


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  • 2 years later...

Your Shimano gears ensure that your bike performs excellently. When your bike is not shifting smoothly or the chain keeps falling off, you need to perform adjusting Shimano gears on a mountain bike. When you adjust the rear derailleur, it is important to check both its upper and lower limit settings. You might need to change the cable tension and use a B tension screw.

Edited by daltonbourne
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