Install the connecting supports on the tunnel

• Version A:

  Install the connecting support (2) on the tunnel.

  Tighten screws (arrows).

  Tighten down screws (1).

  TIGHTENING TORQUES SPECIFICATION
  
  

  Connecting support to tunnel
  M8x25 screw	tightening torque  20 Nm
  Screw	tightening torque  3 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version B: 

Install the connecting support (2) on the tunnel.

Tighten screws (arrows).

Tighten down screws (1).

Courtesy of BMW OF NORTH AMERICA, INC.