For bikes with semi-integrated ZS head tubes, the Ritchey Comp Semi-Integrated ZS headset stands out above all others. The Comp features full-complement stainless steel angular contact cartridge bearings packed with Ritchey high-webbing grease. The upper bearing is a sealed cartridge, while the lower bearing is coated in titanium.

Material: steel
Stack height: 10.3 (1 ?”) / 11.6mm (1 1.5" tapared)
Headtube ID upper: 44mm
Headtube ID lower: 44, 55, 56mm
S.H.I.S. upper: ZS44/28.6 (1 ?”)
S.H.I.S. lower: ZS44/30 (1 ?”), ZS55/40 (1.5"), ZS56/40
Bearings: semi-cartridge (SSC)
Top cap included
Weight: 83g (1 ?”)
Colour: black