The Fiction Savage MID BB 19mm bottom bracket is a bearing set specifically engineered for BMX frames with a MID-standard bottom bracket shell, focusing on precision fit and long-lasting performance. It includes two sealed industrial bearings with a 19 mm inner diameter, designed to ensure smooth crank rotation even under extreme stress. These bearings feature a fully sealed construction that protects against dust and moisture, helping them retain lubrication and running accuracy over time.
The accompanying dust covers are CNC-machined from 6061-T6 aluminum, ensuring high geometric precision and a secure fit within the bottom bracket shell. These covers not only shield the bearings from mechanical damage but also effectively block contaminants without introducing additional axial loads. Their radiused inner edge is designed to match the outer ring of the bearings, minimizing play and vibration during use.
The set also includes four precision spacers in varying thicknesses (2 x 2 mm, 1 x 5 mm, 1 x 8 mm), allowing for fine-tuned crank positioning. This is especially important for optimizing chainline and ensuring even load distribution on the bearings. The Fiction Savage MID BB is the ideal choice for riders who demand not just functionality, but refined engineering in their bottom bracket setup.
