ACB 3645 3544 SS - 1-1/4 440C stainless steel Angular Contact Headset Bearing (35mm x 44mm x 5.5mm: 36 x 45 deg) TH-873 for use with BRT-040 bearing

for use with BRT-040 bearing removal and installation toolkit

The back side of the mallet is also machined to magnetically hold a cassette lock-ring tool

it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatments to achieve its superior mechanical properties

For non-drive and Shimano cranks we also make MR24371 for the same oversized BB90 issue

feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with extra high pressure Almagard 3752 grease for the ultimate protection against sweat and the elements

ACB 3645 3544 SS - 1-1/4 440C stainless steel Angular Contact Headset Bearing (35mm x 44mm x 5.5mm: 36 x 45 deg) TH-873 for use with BRT-040 bearingACB 3645 3544 SS 1 1 4 440C stainless steel Angular Contact Headset Bearing (35mm x 44mm x 5. 5mm: 36 x 45 deg) Angular contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection. This size bearing is also known in the bike Industry by these part numbers: ACB3544H6 AC3544 Not all stainless steel is created equal. Enduro only uses 440C stainless steel balls and races to provide long life and superior