4252ST MTB Bicycle bearings Road Bike Headset 1 1/8" 1 1/2" Tapered Straight fork Integrated Angular Contact Bearing
("42" for OD ø42,"52" for OD ø52,"T" for Tapered Tube fork)
Integrated Angular Contact
IS42/28.6
IS52/40
MATERIAL: CNC MACHINED AL6061 T6
SEALD BEARING
WEIGHT: About 100g
IS43/28.6
IS52/40(30)
Up bearing 41.8mm
Down bearing 52mm
normal version
lightweight version
carbon top cap version