1-3/8" Lower Headset Bearing for Specialized, 45 x 45 Degree


SKU: ACB-4545-1375S

In stock


These all-stainless bearings offer great corrosion resistance and their full-complement (MAX) design offers superior strength. Superior sealing system ("Split Lip") and marine duty grease offer great corrosion resistance. This bearing is a drop-in replacement for Specialized frames with 1-3/8" integrated lower headset bearing.

  • Stainless balls with stainless races
  • Angular contact bearing
  • 49mm OD x 37mm ID x 7mm
  • 45 x 45 degree
  • 25.3 grams
  • Enduro Part # ACB 4545 1375 SS
  • Direct replacement for Specialized part #S102500902



Fits the following frames:

  • Specialized frames with 1-1/8" - 1-3/8" Tapered forks. Lower bearing fits directly in to frame.