I installed it, but I changed it to a grab bar without riding, so it's practically unused (I had the optional helmet lock attached). I haven't attached any boxes or the like. Part number: 80-539-14520 ○ Steel, black painted ○ Carrier dimensions: Width 200mm x Length 200mm ○ Maximum load capacity: 9.0kg or less ○ Commercially available rear boxes can be attached (up to 30L box capacity) ○ Main pipe diameter: φ22.2 ○ Helmet lock mounting plate included (Helmet lock type 2 can be mounted left and right)