How to install volume spacers in a Fox Float X2 Eyelet Diameter (mm) Trunnion, 12.7. Eye to eye length (mm) 205. Optimized reservoir lengths per shock size. Fox float x factory rear shock trunnion metric, 205 x 60 mm, evol lv, 2-positi independent firm mode circuit clockable 2 position adjuster, increased rebound adjuster range (over dpx2).