Campagnolo ProTech Bottom Bracket - BB386 86.5x46mm. Campagnolo ProTech bottom brackets feature a patented external sealing ring design that protects a strong resilient fiberglass-charged polyamide central tube from the harmful ingress of water mud and gri
Campagnolo ProTech Bottom Bracket – BB386 86.5x46mm. Campagnolo ProTech bottom brackets feature a patented external sealing ring design that protects a strong resilient fiberglass-charged polyamide central tube from the harmful ingress of water mud and grit.
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