[sevencyclist]

Here is a daytime picture of two ultimate cupholders installed on passenger side in a 2019 718 Cayman. The passenger seat is situated two notches from furthest back it can possibly go in this picture.

 

[sevencyclist]

I moved the seat back as far as possible and just inset and push up between the seam of plastic panel and fabric. The curve of the tip is similar to inner profile of slot.

The height is just right that the bottom of wraparound holder is barely on the carpet. Once inserted, you can slide forward or back as you desire. I was able to get two in on passenger side and still have room to operate manual seat pull.

 

[sevencyclist]

I got the Porsche Boxster version of ultimate cupholder and it fits my 2019 Cayman 718 well and provides steady hold for water bottle.

 

[sevencyclist]

Has anyone installed on the passenger side? Thought might work well without getting the way of driving.

I don't have my 2019 Base Cayman with manual 2 way seats yet, but might get a holder now while I wait for the car to arrive in February if fits well.