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 |
Defined Color | Black |
S.H.I.S Lower | EC34 |
Weight | 124 |
Crown Race | 30 |
Bearing Type | 45/45 Degree ACB |
Color | Black |
S.H.I.S Upper | EC34 |
Lower Stack Height | 4.2 |