SRAM XX1 Type 2.1 Rear Derailleur

The SRAM XX1 Type 2.1 rear derailleur is designed for mountain biking with 11 speeds and a long cage, for cassettes up to 42 teeth. The X-HORIZON technology maintains a constant chain gap across all gears, with fast, precise shifts and no ghost shifting. It is part of the X-ACTUATION system, to be paired with XX1 shifters.

The ROLLER BEARING CLUTCH reduces chain bounce and slap, while CAGE LOCK makes wheel installation and removal easier. The cage is carbon, the jockey wheels are ceramic and the weight is 245 g. You can choose pure black or black with red details to suit your bike's appearance.

Founded in Chicago in 1987 by Stan Day and a group of cycling enthusiasts, SRAM is still based in the US city today. It makes drivetrains and brakes for road, gravel and mountain bikes. Its story began with a single product: Grip Shift, the shifter that lets riders change gear by twisting the grip.