Can anyone tell me if the rear bumper from a 2009MCS will fit on a 2011 MCS. TIA

 

Check the real oem site maybe, you can see where the clips are located.

 

The size and shape of lights in the bumper changed. You won't be able to directly transfer your 2011 reverse/rear fog lights to a 2009 bumper.

 

The 2009 MCS bumper does not have reverse/rear fog lights so if the 2011MCS was also without reverse/rear fog lights would the 2009 fit the 2011?

 

You would have to transfer your 2011 MCS reverse lights to the 2009 bumper. The 2009 bumper has holes for rear fog lights but they don't match the size/shape of your reverse lights. Maybe you could modify it in some way.

 

To get around the reverse light issue, you can purchase the reverse lights for a 2011 JCW aero kit. Those will fit on a 2009 bumper. See posts 5, 6, 7 in this thread: https://www.northamericanmotoring.co...ml#post3404599