Bumper & Fascia swapped to JCW / S

Put some fake exaust tips in the rear bumper, and fog lights in the front air scoops:

 

Designed some steel brackets to mount the fog lights using some existing holes in the bumper supports. Bolt in and slotted for up/down/left/right adjustability. Pretty happy with how they turned out.

 

3D printed some brackets to hold the fake exhaust tips.
These brackets clamp to the trailer hitch bar that I installed.

 

My JCW rear bumper came from OutMotoring without the fog light. So I just taped over the wiring harness connectors, left them unconnected, and zip tied them up behind the bumper out of the way. I did not get any bulb out warning light or errors. If you get a JCW rear bumper with the fog light, I expect you could re-use one of the fog light connections and leave the other disconnected.

 

It's this Curt C11417 Hitch from eTrailer.

The hitch fit very cleanly under the stock SE rear bumper. I trimmed a 2" x 3" rectangle of plastic out of the under-tray to fit around the hitch receiver, and no modification needed to the bumper. I don't have a good photo from below, but you can see the hitch receiver with and without a drawbar:

 

One more hitch photo for fun with the electric bike on the back:

 

Following up on this first post with more data. I work in the EV industry and love this stuff.

It's been around 7,000 miles since I installed the S fascia and JCW rear bumper.
I keep a spreadsheet recording state of charge, range, speed, ambient temperature, and efficiency (all from the instrument cluster). I punch in the data and clear the trip computer after every charge cycle.
The raw data is aggregated & mapped across temperature and average speed.
While colder temperature affects the range (usable kWh), the efficiency (mi/kWh) is only correlated to speed.
On my normal mix of highway & city commute I am around 4.1 mi/kWh.
On highway road trips averaging 60 mph I average 3.8 mi/kWh.

Most importantly, efficiency & range seem to be exactly the same as before with the stock SE bumpers.
This is comparing 13k miles with the stock SE bumpers to 7k miles of data with the S & JCW bumpers.


One more curveball without explanation: with a bicycle rack and normal bike on the back, I get a consistent increase in efficiency from 4.1 mi/kWh to 4.2 mi/kWh.... a 2.4% increase in range with the bike on the back. This was observable with the original SE bumpers too. Consistent across many trips, and pretty much the opposite of expected. All the aero design guys came out at lunch to speculate. The leading theory is that the weight on the rear of the car causes it to pitch slightly backwards / nose up, altering the airflow pattern to send more under the car. Who's to say, but I thought it was interesting.

 

The ebike is 117lbs with the battery removed. Hitch is 200lb tongue weight rating. Rack is 150lb max but only rated for 50 lbs per bike… to be seen how it fares loaded up like this. Can’t find any rack rated for 117 lbs that fits a 1-1/4” receiver.

Curt C11417 is the one I bought. To your earlier question, yes the whole rear bumper has to be removed for the installation.