ACB 4545 4252 SS - 1-1/2 inch 440C Stainless Angular Contact Headset Bearing - 42mm x 52mm x 7mm; 45 x 45deg AK 71802 LLB - ABEC-5 Angular-Contact

71802 LLB - ABEC-5 Angular-Contact Bearing (C3 clearance) - 15mm x 24mm x 5mm -

or includes a plastic preload adjuster

radial bearing (C3 clearance) - 6mm x 15mm x 5mm -

HDC-0018-BK - IS upper headset bearing cap (black)

ACB 4545 4252 SS - 1-1/2 inch 440C Stainless Angular Contact Headset Bearing - 42mm x 52mm x 7mm; 45 x 45deg AK 71802 LLB - ABEC-5 Angular-ContactACB 4545 4252 SS 1 1 2 440C stainless steel Angular Contact Headset bearing (42mm x 52mm x 7mm; 45 x 45deg) Angular contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection. This size bearing has been used as an upper bearing for Acros headsets that are designed specifically for aero cable routing, and is also know by part number AC4252 Not all stainless steel is created equal. Enduro only uses 440C