The Supertype Evo Max bottom bracket is a full aluminium, high end bottom bracket. The cups are made from AL 7075-T6, while the one-piece light alloy middle keeps weight to a minimum. Fully sealed SKF bearings provide a long life and smooth movement. Specifications: Material: AL 7075-T6 Bearings: SKF sealed 68x46 Diameter: 24mm Weight: 132g
