Cane Creek 110 52/40 1. 5" Alloy Crown Race The Cane Creek 52/40 1. 5" Alloy Crown Race is compatible across the 110, 40, and 10 series headsets. Cane Creek Specifications Crown Race Seat Dia. 39. 79mm Crown Race Type Aluminum, Dual-Seal Manufacture Part Number BAA0173A Cane Creek Headset Finder To figure out which Cane Creek headset you need for your particular frame and fork, see Cane Creek's Headset Finder by clicking HERE. | Cane Creek | 110 1. 5" Alloy Crown Race 52/40 Alloy 1. 5", 52/40Mm, Baa0173A