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These all-stainless bearings offer great corrosion resistance and strength. Superior sealing system (Split Lip) and marine duty grease offer great corrosion resistance. This bearing is a drop-in replacement for Trek Madone frame internal headsets.
- Stainless balls with stainless races.
- Angular contact bearing.
- 51mm OD x 40mm ID x 6.5mm Width.
- 36 x 36 degree.
- Enduro Part # ACB 6808 SS. Same as TREK #290413. Same as Cane Creek Part #HD1449S.
- Fits Trek Madone 6-Series frames with 1-1/2 lower headset.