it's 12mm for -5, could be 10mm for +5 as your raising the bike slightly when it moves forward, i set up 25% rider sag both ends & For me on fast, flat, mild steep it noticibly lost front end grip, even bike park steep it wasn't as planted. BUT... This is just my experience... i'm not one for geeking on measurements but i knew the bike had lost grip over that 2 Deg, Nothing stopping you trying both set ups, easy enough to knock out/in