SRAM GX 1×11 Speed Rear Derailleur – Black/Red
The GX 11 X-Horizon Rear derailleur from SRAM. The rear derailleur uses X-Horizon technology that reduces shifting force and chain slap. The X-Actuation technology eliminates poor shifting. The roller bearing clutch for maximum stability. The 12 tooth X-Sync jockey wheels use tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfered edges, help manage a deflected chain.