This high - performance bottom bracket cartridge is designed for a 73mm shell. It features alloy cups, a 122.5mm axle, sealed bearings, and a waterproof seal. The threaded design ensures a secure fit, making it a reliable choice for your bike.

Using this bottom bracket cartridge is easy. First, make sure your bike has a 73mm shell. Then, carefully install the cartridge with the threaded side properly tightened. When riding, the sealed bearings and waterproof seal will keep dirt and water out, giving you a smooth and long - lasting performance. For maintenance, clean the cartridge regularly with a mild cleaner and dry it thoroughly. Avoid using sharp tools that could damage the alloy cups or the waterproof seal. Check the tightness of the threads periodically to ensure everything stays in place.