CeramicSpeed OSPW Aero Pulley Wheel for Shimano DA9100/ULT8000

The CeramicSpeed OSPW Aero Pulley Wheel System is engineered to deliver the fastest, most efficient shifting performance ever created. Co-developed with aerodynamicist Simon Smart, it reduces friction by 40% compared to stock pulley systems, making it a true advantage for time trials and triathlons.

Wind-Tunnel Tested for Pure Speed: Shaped through extensive aerodynamic testing, the OSPW Aero minimizes drag while maximizing drivetrain efficiency. Its sculpted cage design channels airflow cleanly, helping riders conserve watts during high-speed efforts where marginal gains matter most.

Oversized Pulleys for Ultimate Efficiency: The system uses a 13-tooth upper and 19-tooth lower pulley, optimizing chain articulation and reducing mechanical resistance. Both pulleys are precision-crafted from aluminum and fitted with coated CeramicSpeed bearings for unmatched smoothness and longevity.

Engineered Compatibility and Easy Installation: Designed for Shimano DA9100/9150 and Ultegra R8000/8050 SS derailleurs, the OSPW Aero includes an integrated stop tower for straightforward mounting. It supports cassettes up to 32T and offers a lifetime warranty for lasting confidence on every ride.

Trusted by World Champion athletes, the OSPW Aero delivers elite performance in every condition. Each system includes a 15ml bottle of CeramicSpeed Pulley Wheel Oil for optimal bearing care.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.