Upgrading from an NX to a GX Cassette

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=pVsrWw9nHNY

My Ripmo AF came with SRAM NX components. They actually work really well and are durable, but I want to save a little weight. So I am going to gradually upgr...

SRAM GX, SRAM NX, Mountain Biking, Ibis Ripmo AF, Cycling, Bicycle Components
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