The 2021 Cube Attain SL is an endurance-oriented road bike designed to combine comfort with reliable performance. Its frame is made from 6061 T6 Superlite aluminum, double-butted and smooth-welded for strength and low weight, and features a geometry aimed at reducing rider fatigue on long rides. The fork is a full-carbon CUBE CSL Race Disc, which lowers front-end weight and absorbs vibrations, while the dropouts are flat-mount disc compatible and allow for fender installation.