Macht Schnell Clubsport mount is a super easy, secure and light option. A lot of people remember the Macht Schnell and VAC old style mounts which were just heavy pieces that required a lot of assembly, but the clubsport mount does not. Includes anti-sub and sliders. Have run it in the E92 since day one and just used it again for a passengers seat.
https://www.sub2speedhouse.com/colle...nell-clubsport