S-Works Aethos 2 - Shimano Dura-Ace Di2 co2 and pressurized inflation device bearings and spacers for Mid/American

bearings and spacers for Mid/American shells

evolved to decrease weight while improving ride quality and durability

M4 narrow-wide profile delivers enhanced chain retention and cross compatibility with Shimano

This wheel features the new Odyssey Stage 2 pinned double-walled rim laced to a sealed bearing hubs with a standard male axle

S-Works Aethos 2 - Shimano Dura-Ace Di2 co2 and pressurized inflation device bearings and spacers for Mid/AmericanAt just 595 grams, the S Works Aethos 2 is the lightest production road frame in the world. But that was never the point. Built by breaking the rules of racing to deliver pure road riding bliss, Aethos 2 is engineered to disappear beneath you. Impossibly responsive, supple, and sublime. Now with increased tire clearance, refined components, and data based fit enhancing geometry, it brings that transcendent ride feel to more riders than ever. Aethos 2