CeramicSpeed OSPW Pulley Wheel for Shimano 9100/9150 and 8000 SS/8050 SS

The CeramicSpeed OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS is designed to reduce drivetrain friction by 35–40% compared to stock pulley setups. This updated version includes an integrated stop tower, making installation smoother and improving shifting precision under demanding race conditions.

Oversized Pulleys for Proven Efficiency Gains: Featuring a 13-tooth upper pulley and a 19-tooth lower pulley, the system optimizes chain articulation for significant energy savings—starting from 2.4 watts over standard Shimano pulleys. Both wheels are machined from lightweight aluminium and fitted with CeramicSpeed Standard or Coated Bearings for enhanced longevity.

Customisable Spring Tension for Perfect Setup: The OSPW design allows riders to adjust spring tension based on terrain and riding style. This customisation improves chain stability during accelerations and descents, providing a personalised feel suited to racing, time trials and high-performance road riding.

Lightweight Carbon Cage for Strength and Durability: Built with a custom-moulded carbon fibre cage, the OSPW system achieves remarkable stiffness while keeping overall weight to a minimum. The carbon construction maintains alignment under load, ensuring crisp shifting and consistent chain engagement in all conditions.

Compatibility for Shimano 9100/9150 & 8000 SS Only: This OSPW system is compatible with Dura-Ace 9100/9150 and Ultegra 8000 SS/8050 SS derailleurs up to a 32T cassette.

Note: It is not compatible with Ultegra GS, RX800/805 clutch derailleurs, or Shimano 12-speed systems.

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.