The Stay Strong BB86 Bottom Bracket is equipped with high-precision sealed cartridge bearings, this bottom bracket ensures a smooth and efficient pedaling stroke. It's constructed with a CNC-machined 7075-T6 aluminum body, and has added increased stiffness and improved power transfer due to its wider bottom bracket width. Features: - CNC machined alloy cups - Double sealed bearings - Compatible only with BB86 standard bottom bracket shells - Pressfit 41mm - Laser etched logos - Weight: 109g