The BKS-6053 - BSA Thread-In, Angular Contact, Stainless Steel Bottom Bracket is designed for 30mm cranksets. This bottom bracket is compatible with BSA threaded bottom bracket shells and can accommodate cranksets with a spindle length of 104mm or longer.Made from 440C stainless steel, this bottom bracket is built to last and offers superior corrosion resistance, making it perfect for use in wet conditions or environments where exposure to water and sweat is a concern. While stainless steel has a slightly lower load capacity and is softer than our standard 52100 chromium steel, it is still a reliable option for durable and long-lasting performance.To further protect against the elements, this bottom bracket features LLB type seals and is packed with Kluber CRC Marine Grease for additional waterproofing. We are so confident in the quality and performance of these bearings that Enduro Bearings offers a three-year anti-corrosion guarantee.The BKS-6053 bottom bracket is compatible with BSA shells and has a 30mm axle size. It comes with a two-year warranty and is part of the Enduro Bearings collection.