Base Plates (Crown Races)

Base Plate, 26.4mm ID Baseplate, 30.0mm ID/40.5mm OD for post-April 1995 1-1/8" Headsets Devolution Baseplate, 30.0mm ID for 1.5 lower bearing and 1- 1/8" steerer Baseplate, 39.8mm ID for 1.5 Headsets