Cane Creek's 40 Series Crown Race is made from steel for unsurpassed strength and durability. It also features a single low friction seal to keep the lower bearing protected from the elements.
The 40 series crown race is cross compatible with all 10 series and 110 series products.
There is 3 versions available.
Steel - 41/30 - For 1 1/8th Steerers is Cane Creek Part Number BAA0008S. This is for 1 1/8th steerers and Cane Creek bearings measuring 41mm x 30mm. (ZS44, ZS49 or EC34 lower cups only)
Steel - 52/40 - For 1.5 Or Tapered Steerers is Cane Creek Part Number BAA0010S. This is for 1.5" or Tapered Steerers (40mm Diameter Crown Race Seat) with bearings sized 52mm x 40mm.
Steel - 52/30 - For 1 1/8th Steerers is Cane Creek Part Number BAA0009S. This is works with any Cane Creek Bearing that has a 52mm Outside Diameter and a 40mm Inside Diameter, and you want to run it with a 1 1/8th steerered fork (that will have a 30mm crown seat diameter). These are commonly referred to as "reducing crown races".