CeramicSpeed BSA Shimano Choose:Standard Black Weight: 227g per shoe (size

Weight: 227g per shoe (size 42)

and hypothenar reinforcements: 3 mm gel

And Shaft Bolt) - Psylo Gold A1+ (2025+)

J04C-MF Metal (w/ fin) P03A-RF Resin (w/ fin)

Steeped in Zipp’s legacy of innovation

CeramicSpeed BSA Shimano Choose:Standard Black Weight: 227g per shoe (sizeEngineered for unparalleled drivetrain efficiency and ultimate durability, the CeramicSpeed BSA Shimano bottom bracket optimizes every pedal stroke. The CeramicSpeed BSA Shimano bottom bracket is a high performance upgrade meticulously designed to seamlessly integrate Shimano Hollowtech II cranksets into BSA threaded frames. Featuring CeramicSpeed's ultra low friction bearings, it dramatically reduces drag, ensuring smoother power transfer and