Nest is a replacement cage compatible with all 12-speed Sram gearboxes belonging to the Eagle XX1 / X01 / GX mechanical family (not compatible with Eagle NX and not capable of Axs). Entirely built in 7075 aluminum, its anodized finish offers a wide range of colors and makes the gearbox more stable, thanks to the reinforcement in the "anchoring" points of the pulleys, while keeping the weight very low.