Trek BB90 Ceramic Speed Sram 適用中心配件 / Trek BB90 Ceramic Speed Bottom Bracket for Sram

CeramicSpeed SRAM Standard BB90/95 Kit

• Premium ceramic replacement bottom brackets for the Trek family of bikes
• CeramicSpeed bearings reduce friction and improve performance & durability
• 400% smoother, 128% harder, and 58% lighter than a standard steel bearing
• Made from Grade 3 Silicon Nitrate - the highest possible grade
• Handmade in Denmark and used by numerous pro teams including Trek Factory Racing
• Only compatible with 24mm cranks
• Not compatible with BB30 cranks

Code: 518151, standard option

Code: 518153, coated options use a 75% harder bearing race, further reducing friction and wear