The people at FSA are borderline nuts about all things related to bottom brackets, cranksets, and the integration of the two. Little wonder, then, that pressing the FSA BB30 Bottom Bracket into your frame will yield a smooth, durable ride. It spins on reliable, no-nonsense stainless steel bearings and includes a wave spring, circlips, and nylon spacers for press-fit installation. Please note that this is only compatible with frames built for press fit BB30 assemblies. FSA recommends checking your frame for proper diameter and bearing seat alignment prior to installing, and we definitely agree.