Allows installation of English threaded cups in many BMX and older American made full-size bicycles
Truvatuiv bottom bracket adapter to convert American BB (51mm) to Euro BB (34.8mm) measurement consisting of two aluminium press fit cups for 68mm frames.
For use with English threaded bottom bracket shells with no ISCG'05 mount tabs
Adapter replaces one 2.5mm bottom bracket spacer and is held on by the drive side bottom bracket cup
Features:
• Attaches to rear axle QR providing extra support for the derailleur and hanger.
• Improves shifting and prevents derailleur hanger from bending.
