HDK-0022-S - Maxhit Zero-Stack/External Cup Headset Kit 1-1/8 x 1-1/2 (44/44mm)-Silver TH-873 Radial Suspension Bearing - 30mm

Radial Suspension Bearing - 30mm x 42mm x 7mm -

Grade 25 would be considered a very high grade ball

90% fill Kluber NBU52 grease only runs better and smoother with time and is highly resistant to being washed out

Though it is slightly softer than our standard 52100 chromium steel used in most of our bearings

For bottom bracket bearing removal and installation:

HDK-0022-S - Maxhit Zero-Stack/External Cup Headset Kit 1-1/8 x 1-1/2 (44/44mm)-Silver TH-873 Radial Suspension Bearing - 30mmHDK 0022 S 1 1 8 x 1 1 2 stainless steel, Angular Contact, Zero Stack External Cup Headset Bearing Kit for 44mm 44mm ID head tube framesets Silver All Enduro Maxhit headsets are designed with a 36 inner race chamfer angle, along with a matching 36 upper compression ring and 36 lower crown race. When installed as a complete system, angle differences from your original equipment will not affect functionality as long as all included components are used