Ai-22 ceramic semi-integrated headset, 1-1/8" - red

Semi-Integrated (ZS) headsets offer lower stack height and weight reduction by putting the bearings inside the headtube. ZS: cupped, press-in threadless headset to fit Zero Stack frames with 44.0mm headtube ID . Ai-22 Ceramic: Exo series headsets include a ceramic hybrid angular contact bearing, a specially designed steel reinforced seal for reduced weight and friction . Ai-22 stainless: Meso series headset includes stainless angular contact bearing and a specially designed steel reinforced seal for reduced weight and friction . Ai-03: Strato series headset includes stainless angular contact bearing and specially shaped o-ring type seal. Hand built in Renningen, Germany.