Campagnolo Pro-Tech Bottom Bracket BB386

The Campagnolo Pro-Tech™ bottom bracket- a patented external sealing ring design protecting a strong, resilient fiberglass-charged polyamide central tube from the harmful ingress of water, mud and grit. The bottom bracket mates with the external stainless steel bearings – which are attached to the crank arms as an integral unit rather than the BB cups for greater size and easier maintenance access – and sits over a stiff, strong inner axle spindle, delivering performance that is smooth, fluid and predictably consistent from the get-go. Thanks to the Pro-Tech™ sealing system, it stays that way, however and wherever you ride. 

Designed specifically for gravel riding and racing – protected from harmful ingress of water, mud & grit ProTech™ – a patented external sealing ring & strong fiberglass-polyamide tube Large, protected external stainless steel bearings attach directly to crank arms – for smooth, fluid performance and easy maintenance Full compatibility – all threaded and Pressfit standards