CeramicSpeed OSPW Aero becomes official, making oversize pulleys faster than ever!
CeramicSpeed’s Giro-proven OSPW Aero adds reduction in aerodynamic drag to the reduced drivetrain drag of their popular oversized pulley wheel derailleur upgrades. By effectively replacing their standard oversized cage with a aerofoil carbon shroud, CeramicSpeed OSPW Aero tucks their same machined 13/19T alloy derailleur pulleys and smooth-spinning ceramic bearings out of the wind. CeramicSpeed OSPW
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