Wheels Manufacturing's PF30 Outboard bottom bracket will give you all of the same benefits as their well-loved Outboard style bottom brackets. The two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame, increasing bearing life, and simplifying maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement. Specifically designed for installing 22/24mm spindle diameter cranks (SRAM/Truvativ GXP) in PF30 & Specialized Carbon OSBB frames without the need for any adapters. Features: Converts non-threaded 46mm press-fit bottom bracket shells to accept 24/22mm spindle cranks For 24/22mm (SRAM/Truvativ) for installation into PF30 frames without the need for adapters Includes anodized aluminum cups with Enduro sealed bearings Base: Enduro ABEC 3 sealed bearings Specifications: Frame Interface: PF30, Specialized Carbon OSBB Spindle Interface: SRAM/Truvativ GXP (24/22mm) Bottom Bracket Shell ID: PF46 Shell Width: 68mm, 73mm Material: Enduro ABEC-3 Color: Black Weight: 153g