ENDURO ALL STAINLESS 1-1/8 INCH ANGULAR CONTACT HEADSET BEARING 45 x 45 degree Angular Contact Bearing measures: 30.5mm ID x 41.8mm OD x 6.42mm W

Replaces the UPPER Headset Bearing in many NINER carbon fiber frames. If your Niner MTB frame is carbon fiber and has DIRECT FIT bearings (no cups pressed in) headset bearings, this is your upper bearing. Direct fit headset bearings are also referred to as INTEGRATED or "IS."

440C stainless steel balls and races provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. Dual lip sealing system.

Bearing is also known as:

MR042
870E
MR121
MR070
MR084
MR116
TH-870E
MH-P08

BEARINGS SOLD INDIVIDUALLY