Questions about a bicycle's drivetrain system, including the chain, gears, chainring, derailers, etcetera.

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new 9-speed chain fails after 4 weeks and ~240 miles

About 4 weeks ago I installed a new SRAM PC-971 chain on my Surly LHT. This morning I've noticed that one of the outer chain link plates started to pull away (to spread in a way that the pin is not ...
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Are there any SRAM Apex 1 bikes for sale yet? How long before manufacturers adopt new drivetrains?

I have been looking for a new bike recently, and the gravel grinder category of bikes really appeals to me. However, I also prefer having only one derailleur, and an affordable 1X gravel grinder is ...
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Is this FD compatible with this crankset: 2 teeth too litle

I am a proud owner of this guy. The crankset is SRAM S1200, 36/22 and the FD is SRAM X7, direct mount. However, the cage on the FD broke, and I ordered this item in a hurry. 1) Dyna-Sys 10-speed ...