BKS-54120 - Stainless Steel, Angular Contact, Bottom Bracket Bearing Kit for 30mm cranksets with BB30 framesets. This kit includes two stainless steel, angular contact bearings along with all the necessary seals and spacers for a precise installation. The bearings are made from 440C stainless steel, which provides long life and superior corrosion resistance. Despite having a slightly lower load capacity and being slightly softer than our standard chromium steel bearings, stainless steel is an excellent option for wet conditions, frequent bike washing, or areas prone to sweat. The bearings are also waterproofed with LLB type seals and CRC Marine Grease. Enduro Bearings offers a full two-year anti-corrosion warranty on all their stainless steel bearings. For easy removal and installation, we recommend using the BRT-002 (EB8190) 30mm x 42mm bearing tool. Our Enduro line of bearings is available in various materials and types, including High-Carbon Chromium Steel, Ceramic-Hybrid, and XD-15 with Ceramic or Stainless Balls. All our bearings have deep groove races to accommodate large balls and feature dual-lip seals for ultimate protection against the elements. This bearing kit is compatible with BB30 frame types and has an axle size of 30mm. Warranty: 2 Years. Enduro Reference Number: BKS-54120.