Individual Campy Style Headset Bearings Bearing Size:40 x 52 x 8mm - 1-1/2" Approximately 100mm behind the valve

Approximately 100mm behind the valve

And each of the five spokes has a NACA profile for further improved aerodynamic drag

but if you're new to it all here's a breakdown

however can be installed if desired

9 represent the maximum of Campagnolo technology applied to carbon wheels specifically for use on the track

Individual Campy Style Headset Bearings Bearing Size:40 x 52 x 8mm - 1-1/2" Approximately 100mm behind the valveReplacement bearings to suit Campagnolo Style Headsets, along with many others. BEARING SPECIFICATIONS 30. 15 x 41. 8 x 6. 5mm 45x45 1 1 8" Alternative to: MH P08 30. 2 x 41. 8 x 7mm 45x45 1 1 8" Alternative to: MH P08H7 35 x 47 x 8mm 45x45 1 1 4" Alternative to: ACB3547H8 40 x 52 x 8mm 45x45 1 1 2" Alternative to: MH P16H8, ACB4052H8, GPBHS454552080