45 x 45 degree Angular Contact Bearing measures: 40mm ID x 52mm OD x 7mm W

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.

Replaces the LOWER Headset Bearing in almost all Specialized mountain frames with tapered head tubes. The following frames have been verified: 2009 and later Epic carbon frames
2010 and later Epic alloy frames
2009 and later Era carbon frames
2008 and later Stumpjumper carbon frames
2010 and later Stumpjumper alloy frames
2009 and later Safire carbon frames
2012 and later Safire alloy frames
2010 and later Enduro frames
All Camber carbon frames
2013 and later Camber alloy frames
2011-12 Tarmac frames
BEARINGS SOLD INDIVIDUALLY