ABEC 3 STEEL CARTRIDGE BEARIGNS match Grade 10 steel ball bearings with the quality hardened steel races. Bearings come packed with marine grade grease and integrated seals. The included auxiliary silicone seals are specifically designed for the TREK BB90 and BB95 "net molded bearing sockets." The races have a Black Oxide finish.

INCLUDES:

--ABEC 3 Chromium Steel Bearings (2)
--TREK BB90/BB95 Silicone Seals (2)

THE ABOVE KITS ARE FOR UPGRADING AN EXISTING HOLLOWTECH 2 (SHIMANO) CRANKSET, OR INSTALLING A NEW HOLLOWTECH 2 CRANKSET ON THE YOUR TREK OR FISHER CARBON FRAME WITH BB90 (ROAD) OR BB95 (MOUNTAIN) BOTTOM BRACKET.