Cerámica Speed ​​OSPW Aero ALPHA SRAM Rojo/Force AXS

The CeramicSpeed OSPW Aero ALPHA SRAM Red/Force AXS updates CeramicSpeed's aero derailleur cage with a new generation of ALPHA disc pulleys, aluminum wheels with a composite tooth profile and patent-pending ADR bearing protection that fully encloses the bearings against road grit and water. That enclosure matters more on an aero cage than a standard one, since a sealed bearing is what keeps the system spinning smoothly through a wet spring classic rather than needing a rebuild after one bad ride.

The cage itself carries over CeramicSpeed's structural aerodynamic shroud design, which the brand states reduces aerodynamic drag on the rear derailleur by up to 60% compared to a standard cage — a manufacturer claim from their own wind tunnel testing rather than an independently verified number, though the shrouded, oversized-pulley design is a well-documented way to clean up airflow around a derailleur. CeramicSpeed also states the system cuts drivetrain friction by 35-40% versus a stock pulley setup. Every unit is hand-assembled in Denmark, and it's purpose-built for SRAM Red and Force AXS derailleurs — this version isn't compatible with the previous-generation OSPW Aero cage, so it's a full system rather than a bearing or pulley upgrade for an existing setup.

At $799, it sits below CeramicSpeed's flagship titanium options but well above a standard aftermarket pulley wheel, positioning it for time trial and triathlon-focused riders and racers who care about aerodynamics as much as friction. It's a targeted upgrade for someone who has already committed to an aero position and aero components elsewhere on the bike and wants the derailleur to stop being the one draggy part left in the drivetrain.