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

The Promax EX-1 Black Alloy External Sealed Bottom Bracket is a top - notch choice for your bike. It features cold - forged and CNC - machined alloy cups, dual - labyrinth bearing covers, and precision sealed bearings. This bottom bracket is the ideal match for Promax CF - 2 and HF - 2 cranks and a great upgrade from budget bottom brackets. It fits all 24 - millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37” bottom bracket shells. Technical specs include a 1.37 - inch bottom bracket shell ID, English BB/Frame Interface, 68mm and 73mm BB shell widths, a weight of 102.9 grams, and compatibility with multiple spindle interface types like Shimano Hollowtech II, FSA MegaExo, FSA MegaExo Light, and RaceFace EXI.

Using your Promax EX - 1 bottom bracket is easy. First, make sure your bike frame has a 68 or 73 x BC1.37” bottom bracket shell and a 24 - millimeter bottom bracket spindle. Then, install the bottom bracket following the standard bike installation process. When it comes to maintenance, keep it clean. Regularly wipe off dirt and debris after rides. Check the bearings periodically. If you notice any unusual noise or resistance, it might be time to have them inspected. Also, store your bike in a dry place to prevent rusting. This will keep your bottom bracket working smoothly for a long time.