CeramicSpeed OSPW X Coated derailleur pulley system for Shimano GRX 2x12-speed

With the CeramicSpeed OSPW X Coated pulley wheel system for Shimano GRX 2x12-speed, you can upgrade your drivetrain in terms of performance and durability. It features a 13-tooth upper pulley and a 19-tooth lower pulley, both running on ultra-smooth ceramic bearings. A lightweight carbon cage is also used. Compared to the previous model, installation has been simplified with the addition of a stop pin. Like all Oversized Pulley Wheel (OSPW) systems from CeramicSpeed, the Shimano version offers reduced friction compared to standard pulleys, allowing for significant energy savings.
In the Coated version, there are additional benefits: a metallic coating on the bearing races enhances the already high performance, increases durability, and nearly eliminates bearing wear.

• High-performance derailleur specifically designed for gravel and cyclocross bikes, enhancing your off-road adventures.
• Features an inner cage made of carbon, offering a lightweight and durable solution for precise shifting.
• Compatible with 12-speed cassettes, ensuring a wide range of gears for tackling various terrains.
• Optimized for non-electrical setups, focusing on mechanical precision and reliability.
• Ideal for riders looking for advanced gear shifting capabilities in demanding gravel and cyclocross conditions.
• Excludes workshop packaging, ensuring a ready-to-install component straight out of the box.
• Compatible with GRX RD-RX820 and RD-RX825 derailleurs

• black/13 teeth (guide pulley), 19 teeth (tension pulley): 113781
• blue: 113784
• gold: 113783
• red: 113782

• 1 x CeramicSpeed OSPW X Coated pulley wheel system for Shimano GRX 2x12-speed


• 1 x CeramicSpeed oil 15 ml dropper bottle