NovaRide OSPW Aero 12s Ultegra Dura Ace R8100 9200 Black

Drag reduction with a focus on optimizing frontal impact and smoothing and controlling tailwind thanks to the unique aircraft wing design (closed front and rear). Material: Two ultra-light and strong 3k carbon fiber plates, braided and individually machined. Two machined 7075 aluminum pulleys for increased durability. Two all-ceramic dry bearings for minimal friction and maintenance. Compatibility: Ultegra RD-8150, Dura Ace RD-9250 12-speed derailleurs. Maximum cassette size: We (Nova Ride) recommend a cassette with a maximum of 34 teeth for optimal setup and shifting. Chain length: For optimal performance, you should replace your chain. We (Nova Ride) strongly recommend adding 2-4 additional links.