We created the 725-gram S-Works Crux frame using some of the revolutionary breakthroughs from the ultra-lightweight Aethos frame. The Crux’s straight, hollow drive-side chainstay creates a frame that is light, elegant, and focused around 1x and gravel 2x cranksets. Performance gravel geometry provides a nimble yet confident ride through a longer reach, low stack, and 72 mm bottom bracket drop.