Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black

Experience superior performance and durability with the Promax EX-1 Alloy External Sealed Bottom Bracket 68/73mm in sleek Black. Designed with precision, this bottom bracket features cold-forged and CNC-machined alloy cups that guarantee a perfect fit and exceptional strength. Equipped with dual-labyrinth bearing covers and high-quality sealed bearings, it ensures smooth, long-lasting operation while effectively protecting against dirt and moisture. The EX-1 is the ideal upgrade from standard budget bottom brackets, perfectly compatible with Promax CF-2 and HF-2 cranksets for enhanced drivetrain efficiency and reliability.

Compatible with all 24-millimeter bottom bracket spindles and frames featuring 68 or 73 x BC1.37” bottom bracket shells, providing versatile installation options for a variety of bicycles.