ÖHLINS - Adventure S46 Shock (BM 943) for BMW R 1200 GS AdventureDISCONTINUED Replaced with BM 047 It has a 46 mm piston and is available in a number of different applications with or without external reservoir either with a hose or in piggy back versions. It can also come with pre load spring adjusters, all depending on the kind of bike and requirements of the bike. It is also available with all different kinds of damping adjusters depending on the specific application. Type Code: S46DR1S Tech 46mm piston STX