Press-fit 30 bottom bracket to suit carbon or alloy road BB30 cranksets. Stainless steel cartridge bearings pre-installed in nylon cups for dependable performance. Compatible with BB386 Evo, PF30, and BBRight frame standards. Designed with clearance to allow internal routing of wiring for Di2 or other electronic shifting systems. This PF30 Road Bottom Bracket features stainless steel PF30 cartridge bearings in nylon cups. It includes a wave spring, bearing shield, spacer, and nylon adjustment washers.