Cane Creek 40-Series External Cup Complete for 34mm Head-Tube (1-1/8-Inch Straight Steerer, Black)

6061 T-6 Aluminum
Internally Contoured Cups Minimize Weight
Innovative Clip-Seal Seals the Top Assembly and Captures the Compression Ring
Durable Steel Crown Race with Low-Friction Face-Seals
Internal Parts Are Cross-Compatible Across 10, 40 and 110 series
0.137 kilograms