As you might expect
We are so confident in the performance of XD15 Ceramic-Hybrid bearings
Enduro "entry-level" headset bearings feature premium materials like Black-Oxide treated races and carry a two year warranty
BKC-0550 - BSA Thread-In
Radial Bearing (CN clearance) - 15mm x 24mm x 5mm -
CO 696 VV - Enduro Zero, Black-Oxide, Ceramic Hybrid, ABEC-5, Radial Bearing (C3 Clearance) - 6mm x 15mm x 5mm 428420 As you might expectCO 696 VV Enduro Zero, Black Oxide, Ceramic Hybrid, ABEC 5, radial bearing (C3 clearance) 6mm x 15mm x 5mm Enduro Zero, Ceramic Hybrid, ABEC 5, radial bearing featuring black oxide treated 52100 high Carbon chromium alloy races paired with Grade 5 Silicon Nitride Ceramic Balls with , ultra low drag VV dual lip seals to withstand the outside elements, and to contain the 90% fill Kluber NBU52 ultra smooth and sticky, water proof grease. Si3N4 Ceramic