OSPW System Coated SRAM eTap 11s Black

The CeramicSpeed OSPW Coated for SRAM eTap 11-speed, part number 101651, is an oversized pulley wheel system engineered for SRAM RED eTap 11-speed rear derailleurs. OSPW stands for Oversized Pulley Wheel System: a purpose-built assembly that replaces the conventional derailleur cage to guide the chain through larger pulley wheels and help reduce friction in the drivetrain. The Black finish gives this technical upgrade a clean, understated appearance.

The system features two 17-tooth aluminum pulley wheels carried by a carbon fiber cage. Larger pulleys work alongside CeramicSpeed Coated bearings to promote smooth rotation and reduce mechanical resistance. The Coated bearing treatment is a distinctive feature of this model, designed to protect bearing running surfaces and support consistent operation.

Compatibility is clearly defined. CeramicSpeed OSPW 101651 is intended for SRAM RED eTap 11-speed rear derailleurs, including both short-cage and WiFli versions. It can be used with cassettes featuring a largest sprocket of up to 32 teeth. It is not compatible with 12-speed SRAM eTap AXS systems.

Fitting an oversized pulley system requires attention to chain length, derailleur alignment and spring tension. CeramicSpeed recommends starting with a new, uncut chain because larger pulley wheels may require a different chain length from the original setup. Correct installation and adjustment help preserve shifting quality while allowing the system to operate as intended.

Developed for compatible road and triathlon drivetrains, the CeramicSpeed OSPW Coated Black combines a recognizable construction with a specific functional purpose. Its two matching 17-tooth pulleys, carbon cage and Coated bearings offer a considered way to refine an SRAM RED eTap 11-speed setup. For riders upgrading an existing compatible derailleur, it provides a complete oversized pulley wheel assembly with carefully defined fitment.