- 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. * Material: AL 7075-T6 * Bearings: SKF sealed * Thread: 1,370 x 24 tpi BSA/Press Fit * Diameter: 24mm * Weight: 134g
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