Sram BB Gxp Team Pressfit MTB BB121 (Pressfit Fat Bike) Gxp
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A variant of the external bottom bracket, PressFit cut weight by up to 40 grams and provide easier installation by allowing you to press the bearing cups into the frame instead of threading them. There's no change to the crank -? spindle length and diameter remain the same. For GXP PressFit Fat Bike.