61902 LLU/LLB A5- ABEC-5 Radial Bearing (CN Clearance) - 15mm x 28mm x 7mm TH-873 440C stainless steel

440C stainless steel

This extra tough

Though it is slightly softer than our standard 52100 chromium steel used in most of our bearings

Trek BB90 bottom brackets require the bearing to be directly pressed into the BB shell that is often made from a material that is softer than steel

61902 LLU/LLB A5- ABEC-5 Radial Bearing (CN Clearance) - 15mm x 28mm x 7mm TH-873 440C stainless steel61902 LLU LLB A5 ABEC 5 Radial Bearing (CN clearance) 15mm x 28mm x 7mm Enduro ABEC 5 radial bearings feature 52100 high Carbon Chromium alloy races paired with grade 10 Balls. Enduro engineers all of our radial bearings with deeper grooves to accommodate the largest balls possible, providing maximum bearing contact area and greatly increased bearing life. Designed specifically for bicycle applications, the LLU LLB seal combination on these bearings