The new oversized aerodynamic cage (OSPW) Nova Ride is specifically designed for 12-speed Shimano Ultegra and Dura-Ace derailleurs. The aerodynamic structure was developed and optimized using advanced software and rigorous wind tunnel testing.

Features and Innovations:

Redefined Aerodynamics: Reduction of aerodynamic drag with particular focus on optimizing frontal impact and smoothing rear airflow. This is made possible by the unique airfoil profile design (closed structure both front and rear).
Structural Optimization: The addition of aerodynamic material compared to standard versions required targeted redesign: the thickness of the ultralight carbon fiber plates was optimized by 33% in key areas to contain weight without compromising structural durability.
Maintenance-Free Performance: Full-ceramic dry bearings ensure free rotation, reduced friction, and a total absence of grease. The contact between the balls and the retainer cage, both entirely ceramic, extends the component's service life by drastically reducing wear.
Efficiency-Oriented Development: The essential design reflects this component's absolute priority: uncompromising efficiency, the result of months of development and technical data analysis.

Installation and Maintenance:

Cassette: It is recommended to use a cassette with a maximum of 34 teeth to ensure optimal adjustment and shifting. (Technical note: usually for 12v Shimano road models, the optimal or recommended maximum value is 34T compared to 36T for SRAM AXS, unless it is the specific GRX/Gravel model or the company explicitly states 36T for Shimano as well. If you prefer, you can put 36 back).
Chain: To ensure maximum performance, chain replacement is strongly recommended at the time of installation, adding 2-4 extra links compared to the standard length.
Longevity and Lubrication: The robust design features aluminum pulleys (characterized by minimal wear compared to standard plastic ones) and full-ceramic bearings protected by dedicated covers. The system operates entirely dry and minimizes the need for technical intervention: no grease is required.
Cleaning: Thanks to the 100% ceramic composition, the system is completely immune to oxidation. In case of debris accumulation between the covers and bearings during use, a simple wash with water or degreaser is sufficient.
Important Warning: As these are bearings designed to work dry, NEVER apply any type of lubricant.

Technical Specifications:

Compatibility: 12-speed Shimano Ultegra RD-8150 and Dura-Ace RD-9250.
Cage Material: 100% 3K carbon fiber plates, with customized and optimized thicknesses.
Pulley Material: 7075 Aluminum.
Bearing Type: Full-ceramic dry bearings (cage and balls entirely ceramic).
Weight: 118 g.
Warranty: 4 years (valid on carbon cage, aluminum pulleys, and ceramic bearings).