They keep the dirt out and the oil inside
Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands with a lifetime warranty
you won’t struggle with creaks and other noises
and contain the 90% fill Kluber NBU52 grease that runs smoother with time and is highly resistant to being washed out
This IS42/IS52 integrated/drop-in headset fits bikes with head tubes with 42mm top IDs and 52mm bottom IDs
BGK-005 - Inner Guide Set for Bearing Press sale They keep the dirt outBGK 005 Inner Guide Set for Bearing Press For use when the ID of the bearing is open, this toolset includes outer guides for all the most common bearing sizes. These guides are designed to be used in conjunction with any of our bearing press tools designed around a 5 16" Acme rod, including BRT 060 and the discontinued BRT 005 & BRT 050 press kits. BGK 005 includes pairs of inner guides sized to work with these bearings: 6000, 6001, 608, 6802, 6803,