CeramicSpeed BB ALPHA Bottom Bracket Bearing Kit - For BB90 Compatible 24mm/Shimano Spindle Road Optimized BLK MFPN=BB20.P-BSA73.K Featuring a dual phased-pawl drive

Featuring a dual phased-pawl drive mechanism accomplishing 90 POE and 4degree engagement by way of a six pawl driver and 45 tooth drivering

Double "snap" seals for water and dirt protection Bottom Bracket Shell I

with Key Safe Program

Width measured at the hood Flare 4 Drop Bend Style Compact Cable Routing External Material Aluminum Clip-on Compatible Yes Bar Clamp Diameter (mm) 31

Fiberglass Composite with Rubber Inserts

CeramicSpeed BB ALPHA Bottom Bracket Bearing Kit - For BB90 Compatible 24mm/Shimano Spindle Road Optimized BLK MFPN=BB20.P-BSA73.K Featuring a dual phased-pawl driveA bottom bracket built to outlast your frame BB ALPHA features hardened stainless steel races hand built with grade 3 Silicon Nitride ceramic balls custom engineered seals and precision dust covers delivering up to 500% better moisture protection while still providing ultra low friction performance. All CeramicSpeed BB ALPHA models are handbuilt in Denmark and backed by a lifetime warranty. Hardened Stainless Steel races offer exceptional corrosion