BB30A - TorqTite - XD15 Pro - 24mm is a high-quality ceramic bearing bottom bracket from Enduro Bearings. This exclusive product is designed to fit BB30A framesets and Shimano 24mm cranksets. The XD-15 Pro BB features Enduro's XD-15 15° Angular Contact cartridge bearings, which are pressed into precision machined aluminum cups. These cups easily thread directly into the BB shell, providing a secure and durable setup. Enduro's XD-15 Pro bearings are made from XD-15 steel, the same material used in their XD-15 Corsa bearings. These bearings provide a 15° angular contact sealed bearing in a standard-sized cartridge. They also have deep-groove raceways, allowing for maximum sized Grade 3 Silicon Nitride ceramic balls. This design increases contact area and improves performance and longevity. Manufactured to the highest standards in California, USA, Enduro XD-15 bottom brackets combine corrosion-proof, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls. This proprietary process results in the ultimate high performance bearing setup. Enduro is so confident in the quality of these bearings that they offer an unlimited lifetime bearing and race warranty. One impressive feature of these bearings is that they actually improve with use. As the bearings wear-in, the balls make the races even smoother. While other ceramic-hybrid bearings on the market may claim initial speed and power advantages, only Enduro XD-15 bearings will continue to get faster and smoother over time and use. Enduro understands that finding the right bottom bracket solution can be challenging, especially with the growing range of bicycles on the market. That's why they offer over 50 different types of bottom brackets for various bottom bracket shell and crankset combinations. They have threaded options for BSA, BSA 30, Italian, and the T47 system, as well as press-fit options like the Torqtite and Delrin Cup. They even offer flanged, double-row bearings to fit 30mm cranksets in BB86 shells. This particular BB30A bottom bracket has XD-15 ceramic bearings, an LLB seal type, and uses Kluber NBU52 grease. The axle size is 24mm. Choose Enduro Bearings for the highest quality and performance in bottom brackets. With their unlimited lifetime warranty and commitment to continuous improvement, you can trust that Enduro XD-15 Pro is the best choice for your bike.