BONTRAGER CeramicSpeed Shimano Coated BB90/95 Kit vendita

Description

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

Coated options use a 75% harder bearing race, further reducing friction and wear

Handmade in Denmark and used by numerous pro teams including Trek Factory Racing

Only compatible with 24mm cranks

Not compatible with BB30 cranks