ACROS Bearing Set for IS52 / IS60 ICR Headsets

The fully integrated ACROS IS headset combines robust stainless steel angular contact ball bearings with sophisticated gaskets. The result: long-lasting performance, minimal maintenance, and more relaxed time on the bicycle. Compatible with bikes featuring integrated cable routing (ICR). For more information on compatibility, check out the headset finder on the ACROS website. Technical Specifications: - Steerer tube top: 1 1/8" bottom: 1.8" - Upper angular contact ball bearing: 42 × 52 × 7 mm - 45°/45 - Lower angular contact ball bearing: 46 × 60 × 8 mm - 45°/45 - Upper press-fit diameter (ID) 52 mm - Press-fit diameter, bottom (ID): 60 mm - Ball bearings made of steel/stainless steel