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

ACB4545125LSS

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Headset Bearings