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Amazon.com : Rear Derailleur Adjuster, Chain Gaps Adjustment Gauge Tool for SRAM Eagle GX NX 12 for Hiking, Road, City, Mountain Bicycles and Racing Bicycles : Sports & Outdoors
Eagle™ B-Gap Adjustment | This is the most important step in setting up and adjusting your Eagle™ drivetrain. #SRAMeagle | By SRAM MTB | Facebook
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