Enduro Bearings 6805N LLB - CXD - 25x37x6 is a top choice for cyclists seeking reliable performance. This bearing is crafted with XD-15 Ceramic-Hybrid technology, featuring corrosion-resistant, cryogenically treated nitrogen steel races. The Silicon Nitride Grade 3 ceramic balls enhance durability and performance. The deep-groove design of the Enduro Bearings 6805N LLB - CXD - 25x37x6 allows for larger contact areas, improving both performance and longevity. The 90% fill Kluber NBU52 grease ensures smooth operation over time, resisting washout and sticking to the balls for optimal lubrication. Enduro Bearings offers an unlimited lifetime warranty on these bearings, confident in their ability to improve with use. Unlike other ceramic-hybrid bearings, these become smoother as they wear in, providing ongoing speed and efficiency advantages. Commonly used as a direct replacement for Campagnolo Ultra Torque cranksets, these bearings are versatile and reliable. Enduro Bearings are available in various materials, including high-carbon chromium steel, 440C stainless steel, and XD-15 with ceramic or stainless balls. They feature deep groove races and dual-lip seals for excellent protection against the elements. Static load: 604lbf / 2.68kN Weight: 18.7g