BOTTOM BRACKET BEARING EXTRACTOR ADD-ON SET PARK TOOL BBP-AOS

The Park Tool BBP-AOS is the bottom bracket bearing extractor add-on set that completes the Park Tool BBP-1 or BBP-1.2 press. It turns the press into a tool for removing press fit bearings, cups and adapters and, thanks to the included drifts, for installing bearings into cups already fitted in the frame.

The system is based on expanding collets and extractor cups: the collet goes into the bearing bore, expands and grips it from behind, while the extractor cup rests against the frame or the cup and receives the part as it comes out. Removal happens with the controlled push of the press, with no hammer blows on the frame and no need for universal drifts, a real advantage with carbon bottom bracket shells or composite cups. Eight precision-machined extractor cups and five hardened collets cover a wide range of bearing inner diameters and bearing and cup outer diameters. The kit also includes eight installation drifts for pressing individual bearings into cups already in place, a frequent job on many bottom brackets with plastic or aluminium cups.

How the BBP-AOS bottom bracket bearing extractor works

• It fits on the Park Tool BBP-1 or BBP-1.2 bearing press, which is required for use
• The expanding collet goes into the bearing and locks it from the inside
• The extractor cup acts as a counter-support and collects the bearing, cup or adapter
• Turning the press handle draws the part out gradually and squarely, without impact
• The installation drifts then let you press new bearings into the existing cups

Why choose Park Tool BBP-AOS

• Impact-free extraction, gentler on frames and cups than traditional drifts
• Hardened collets and precision-machined cups for a secure, repeatable grip
• Many inner and outer diameter combinations: the full list is in the Park Tool instructions
• Completes the BBP-1.2 set, creating a single station for installation and removal
• Organised case that keeps every component in its place

For anyone who replaces press fit bearings often and wants to leave drifts and hammer in the drawer, the Park Tool BBP-AOS bottom bracket bearing extractor add-on set is the natural complement to the BBP-1.2 press and an investment that pays back in time saved.