AM19-2US - Upper Arm Holder (US Hardened Version)

AM19-2US provides exact same geometry as AM19-2. 

This new part is made from 3mm thick 7075 T6 high grade alloy, which mean it's 0,5mm thicker than AM19-2. 
To keep same roll centers on top links like with AM19-2 its needed to run 0,5mm less shims under ST24 Ball Studs.

Info: Parts with "US" designation are especially designed for the use at tracks with hard boards/barriers. 
During the different design compared to the standard parts, the "US" parts are more reliable at impacts. 
Basically this optional parts are a bit more heavy than standard parts.