Promax PI-1 Alloy Sealed Bearing 1-1/8" Press in Headset Black. The 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
- TECH SPECS
|Upper Stack Height||8.2|
|S.H.I.S. Stem Clamp Diameter||28.6 Threadless|
|Bearing Type||45/45 Degree ACB|
|Lower Stack Height||4.2|