COMPLETE LOWER CUP ASSEMBLY FOR SYNCROS "F.B.I." 1.5 INCH x 1-1/8" REDUCER HEADSET

Includes the following:
--Lower steel cup for 1.5 inch (49.6mm) head tube. Doubles as outer race for the tapered roller bearing assembly.
--Massive Enduro tapered roller bearing. The inner race of the tapered bearing presses directly onto 1-1/8" steer tubes.
--Special base plate/seal takes the place of a conventional crown race.