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BB90 for Trek SRAM GXP
Trek developed their own bb standard to optimize their frame designs. BB90 has a 90.5mm shell width and 37mm inner diameter and is designed so that the bearings of external cups can hide within the frame..
The CeramicSpeed kit c Read more..
Compatible with: Sram GXP
Frame Fit: BB90
Inner diameter: 37 mm
Shell width: 90.5 mm