Enduro HS Bearing 1.375" 36.8 x 45.8 x 6.5 45x45° Variant:Enduro Headset Bearing 1.375inch ACB 4545 S8551 Black Oxide 36.8 x 45.8 x 6.5 mm 45x45deg S182500006 S172500014 Weight: 1255 g

Weight: 1255 g

radial bearing with 52100 High-Carbon Chromium alloy races paired with grade 10 balls

and can be used as a pivot bearing though the MAX-type version of this bearing is better suited for suspension use

The Enduro line of headset bearings begin with chromium steel

Enduro HS Bearing 1.375" 36.8 x 45.8 x 6.5 45x45° Variant:Enduro Headset Bearing 1.375inch ACB 4545 S8551 Black Oxide 36.8 x 45.8 x 6.5 mm 45x45deg S182500006 S172500014 Weight: 1255 gACB 4545 S8551 BO 1 3 8" Angular Contact Black Oxide treated Headset bearing (36. 8mm x 45. 8mm x 6. 5mm: 45 x 45 deg) Angular contact headset bearing featuring anti corrosion Black Oxide Magnetite coated 52100 High Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry free performance This size bearing is also known in the bike Industry by these part numbers: