Each KCNC Ultra series pulley wheel is equipped with a small yet durable sealed steel cartridge bearing and dual labrinth seal dust caps, all within an incredibly lightweight design. The wheel itself is machined in a spoked design from light and strong 7075 anodized aluminum.
Sold as an individual pulley. Compatible with Campagnolo, SRAM (road, X-0, XX1), and Shimano (road and mountain) rear derailleurs. (Stock Campagnolo 10 speed derailleurs are equipped with 10 tooth pulleys; SRAM, Shimano, and 11 speed Campagnolo are equipped with 11 tooth pulleys).