Headset Bearings

Product Details Since 1996 White Industries has partnered with the folks at Enduro to ensure that the bearings we install in all our products are of the highest standards.  Along the way Enduro has continually sought out better materials, seals, greases, tolerances and manufacturing techniques to stay on the cutting edge of bearing development and performance.  These are the same Enduro angular contact 440c stainless steel bearings that come standard with our headsets. Consult the information below for the bearing specs for your headset model.  Bearing specs for specific headset models is also available on the respective headset model pages. Specs Sold individually Headset bearings are ABEC 3 grade angular contact, made from 440c stainless steel and use a special Almagard 3752 grease.  Bearings use either a 36 or 45 degree or inner angle, and a 45 degree outer angle 45 degree outer angle between the bearing and cup (or frame) keeps everything aligned and tight as well as allowing for easy bearing replacement Bearings are not press-fit into the cups.  This is what makes them so easy to replace! Headset models and bearings Headset Model Upper Bearing Lower Bearing  Lower Fork Race Compatibility EC34│EC34 BR3645SS  BR3645SS 1-⅛” (30mm) EC34│EC37 BR3645SS BR4545125LSS 1-¼” (33mm) EC37│EC37 BR3645SS BR4545125LSS 1-¼” (33mm)   EC34│EC44   BR3645SS   BR6808CCSS 1-⅛” (30mm)  1-¼” (33mm)  1-½” (40mm)   ZS44│EC44   BR3645SS   BR6808CCSS 1-⅛” (30mm)  1-¼” (33mm)  1-½” (40mm) ZS44│ZS44 BR3645SS BR3645SS 1-⅛” (30mm)   ZS44│ZS56   BR3645SS   BR6808CCSS 1-⅛” (30mm)  1-¼” (33mm)  1-½” (40mm) IS41│IS41 BR3645SS BR3645SS 1-⅛” (30mm)   IS41│IS52   BR3645SS   BR6808CCSS 1-⅛” (30mm)  1-¼” (33mm)  1-½” (40mm) IS42│IS42 BR36451125SS BR36451125SS 1-⅛” (30mm)   IS42│IS52   BR36451125SS   BR6808CCSS 1-⅛” (30mm)  1-¼” (33mm)  1-½” (40mm) Headset bearing descriptions Enduro Bearing # Inside/Outside/Width (mm) Inner/Outer Angle ABEC Rating Material ACB3645SS 30.2x41x6.5 36/45 3, angular contact Stainless Steel ACB36451125SS 30.2×41.8×6.5  (nominally referred to as a “42mm” O.D. bearing) 36/45 3, angular contact Stainless Steel ACB6808CCSS 40x52x6.5 36/45 3, angular contact Stainless Steel ACB4545125LSS 34.1×46.8 x7 45/45 3, angular contact Stainless Steel