Shimano XTR / XT vs Sram XX1 Eagle - Shifting Performance In Slow Motion. - YouTube
Testing Video: Shimano XTR RD-M9100-SGS & SRAM Eagle 1X12S Shifter | Now, there is a question that if the "SRAM shifter can fit with Shimano 12S rear derailleur?" Here is the video
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XTR 12 Speed vs. SRAM Eagle: What are the Differences? | MTB-MAG.COM
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Review: Shimano's XTR 12-Speed Drivetrain Sets the Bar for Shifting Performance Under Power - Pinkbike