The platform itself is CNC machined from virtually indestructible HDPE and features a Rotopax bolt pattern in the center and on each side. 

Note: Luggage and SW Motec racks sold separately. 

BMW GS Adventure 1200 and 1250 models require a tailor-made  for the exhaust side of those factory BMW racks. 

Kriega aso makes a  that fits nearly any 16- to 20-mm tubular factory rack via 5 variable-position alloy clamp hooks.