MTB Threaded External-Cup GXP Bottom Brackets

Size Guide
Thread Type

  • The BBInfinite BSA Threaded GXP Bottom Bracket Cups work with all GXP-standard MTB cranksets on the market, be it Sram, Quarg, and all others.

    Alloy bottom bracket cups are MilSpec MIL-A-8625 Type II anodized for extreme durability. On the drive side, a polymer labyrinth seal bearing cover with integrated bushing keeps out dirt and debris while isolating the steel bearing races from the steel spindle, halting creaks, corrosion, and accelerated wear of the crank spindle itself. The spline side (non-drive side) features an anodized, precision machined bushing and anodized alloy bearing shield. Installs with the common Park Tools BBT-9 bottom bracket wrench. Spacer kit included.

  • Technical Specifications

    Weight: Ceramitech: 82g | ABEC-7: 87g

    Frame Width: 73mm

    Frame Diameter: BSA Threaded

    Spindle Diameter: 24mm DS / 22mm NDS

Bottom Bracket Selection Guide