The inner guide inserts simply snap-in to keep everything straight while installing and removing BB cups
The Enduro line of bearings are available in High-Carbon Chromium Steel
440C Stainless Steel
This is particularly important in applications like BBs
61903 LLB C3- ABEC-5 Radial Bearing (C3 clearance) - 17mm x 30mm x 7mm -
6902 LLU MAX-E BOSL - Solid-Lube, Extended Race, MAX-Design, Black-Oxide, ABEC-3, Radial, Suspension Bearing - 15mm x 28mm x 7/10mm TH-873 The inner guide inserts simply6902 LLU MAX E BOSL Solid Lube, Extended Race, MAX Design, Black Oxide, ABEC 3, radial suspension bearing 15mm x 28mm x 7 10mm MAX Solid Lube suspension pivot bearings feature a unique lubricant infused foam polymer injection molded into the bearing assembly, replacing traditional grease or oils typically found inside a bearing. The solid lube polymer fills the entire cavity of the bearing leaving almost no room for contaminants or moisture to