SRAM GX T-Type Eagle D2The GX Eagle Transmission derailleur every bit as crisp and precise as the other derailleurs in the transmission family, but features things like removable skid plates for better protection and serviceability. Shifting under load is made possible on the GX cassette due to a combination of X SYNC technology and cassette mapping, creating seamless shifts even during your hardest power output. The GX Eagle Transmission DUB crankset stands apart and gives