The Promax PI-1 Alloy 45×45 headset has an aluminum top cap, upper bearing cover, lower race and upper and lower cups. All-aluminum construction results in a lightweight headset. Each headset is fitted with super-smooth rolling, precision, 45×45 angular-contact sealed bearings.
Because this versatile headset has 45×45 angular-contact bearings, you can use the included cups and install it in standard frames. Or, leave the cup in the box, and use it as an Integrated headset.
Weight: 124 g
- Weight: 124 g
- Upper Stack Height: 8.2 mm
- Lower Stack Height: 4.2 mm
- Crown Race: 30
- S.H.I.S Lower: EC34
- S.H.I.S Upper: EC34
- S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
