Ceramic Speed bearings for use on Trek BB90 bottom brackets using SRAM GXP chain sets. 22mm non drive side bearing and 24mm drive side bearing. Bearings remain super smooth, no roughness or notchiness. Seals are in excellent condition. What you will receive will be 1 x 22mm non drive side bearing with alloy Ceramic Speed dust shield. 1 x 24mm drive side bearing with top hat seal. Removed from a Project One build as I’ve moved from SRAM Red Etap to Shimano Dura Ace Di2. Summer bike use only, less than a 1,000km ridden. These are good for 24,000 - 48,000km if looked after. These are the standard (rrp.£240) Ceramic Speed bearings and not the ‘coated’ (rrp. £340) versions. Please note that the ‘wavy’ washer that sits under the drive side spider on the spindle must be present on the GXP chainset you will be fitting for correct installation. If in any doubt, please contact your local bike shop. No warranty given. Please see images as they form part of the description. Thanks for looking.