ACROS Bearing Set for IS41 / IS52 Headsets

The fully integrated ACROS IS bearing set combines robust stainless steel angular contact ball bearings with sophisticated gaskets. The result: long-lasting performance, minimal maintenance, and a more relaxed riding experience on your bicycle. For more information on compatibility, check out the headset finder on the ACROS website. Technical Specifications: - Fork steerer: 1 1/8" at the top; 1.5" at the bottom - Upper angular contact ball bearing: 41 x 30,1 x 6,5 - 36°/45° - Lower angular contact ball bearing: 40 x 52 x 7 - 45°/45° - Upper press-fit diameter (ID) 41 mm - Lower press-fit diameter (ID): 52 mm - Steel/stainless steel ball bearings