🚴♂️ Elevate Your Ride with Thinvik's Precision Engineering! Sealed bearing assembly for superior lubrication and protection against the elements. Weighs only 0.35 kg, enhancing your bike's performance without the extra load. Crafted from high-class materials for long-lasting durability. 2-bearing structure ensures smooth operation and less labor-intensive rides. Seamlessly fits Shimano BB-UN26/BB-100/BB-101/BB-300. Precision threads 68mm BSA compatibility Integrated frame protection The Thinvik Square Tapered Bottom Bracket is a high-quality, lightweight component designed for 68mm English BSA bike threads, compatible with various Shimano models. Its durable construction and sealed bearing assembly ensure long-lasting performance and protection for your bike frame, making it an essential upgrade for any cycling enthusiast.