BB386 Bottom bracket boxes for cranks Campagnolo Ultra Torque (Non - Ekar) This three-piece nesting solution allows you to mount your Campy cranks in your frame's BB386mm bottom bracket box without any problems. This cup set doesn't come with bearings like our other bottom bracket solutions as the bearings are attached to the Ultra Torque bottom bracket (No - Ekar), although Enduro offers a range of enhanced bearings for the application, including 440C stainless steel bearings and XD15 ceramic hybrid bearings. This is just one of the many solutions Enduro offers for the wide range of cranksets on the market today. For a full range of crankset solutions, please visit our website. Enduro offers a solution for almost any configuration at several price/performance levels, from standard ABEC-3, to XD15 Ceramic Hybrid bearings with a lifetime warranty.