I started riding mountain bikes 7 years ago and have had all forms of drivetrain possible, from triple to double chainring, to 1x11, and now the SRAM Eagle 1x12 drivetrain. The first time that I rode the 1x system was with the SRAM GX with a 10-42T cassette. I feel that this drivetrain improved my reaction capabilities as well as my maneuverability, but sometimes the gear range was not wide enough for all trails. When SRAM launched the 1x12 system, they solved this gear range problem by adding a huge 50T cog to the cassette. My first thought when stepping up from the 42T cog to a 50t cog was that the system could tighten or even worse, the cogs would jump and cause it to loose cadence. I could not have been more wrong.
I installed all parts of the SRAM Eagle drivetrain system including the rear derailleur, and I have to say that this works perfectly. The step from one cog to another is seamless, even when jumping to the large 50T cog. SRAM made a very good rear derailleur, very light (only 264 grams) and the compounds are very resistant to some forces during our rides.
For me, this is the best drivetrain I have ever had, and as SRAM said, no doubt the front derailleur is dead.
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