TBW Underbody Protection Panels
 

Bought these on a whim because I haven't seen anyone else try and and I need an aluminum base to start building ducting from.

Fits very well, most holes are slotted so you get a little wiggle room where it matters. My front bumper has been through hell and I've hacked off a lot of the underside. They supply pop clips to fasten the splitter portion that replaces the plastic one to your bumper, neat! I used zip ties for now.

Engine guard that replaces the existing aluminum one fits perfectly, even adds a little clearance, now my JDL turbo manifold isn't touching it. The oil change panel even fits with a fumoto valve installed!

This was $209 USD W/ free shipping, I am impressed!

https://www.ebay.com/itm/354219331233

That looks great! Does the front piece simply replace this oem piece?:

https://images.simplepart.com/images...1142002409.png

As far as I know, yup! I removed that and the thick plastic splitter when I bought my car so I don't know if the coverage is the same though

Hey man! How is this holding up now ? Any issues ? Thinking of buying this instead of the oem crap.

They are doing great! My front piece is just zip tied to some holes I smoked into the lip on my front bumper, they're solid. I like that there's a door that covers the oil pan drain plug

FWIW: You might consider using 1/4"clip nuts and screws on the bumper instead of zip ties. I'd be worried that chafing or an accidental scrap on a curb would cause the zip ties to fail. And you know, it wouldn't fail in a parking lot. It would fail when you are doing 75 on a back road.

They actually include a bunch of those. I'll get to it sometime

What is the advantage these have over the stock pieces?

I lost my stock front undertray a very very long time ago, and wanted something aluminum I could build ducting onto. The back piece is less robust than the stock one, but lighter by a bit, and covers the oil pan completely (good and bad, if you rely on that air for cooling). Certainly not worth it if you've got all the stock assembly, cool for bling otherwise. Also much faster to remove than the stock pieces, which is something I need because my bumper is on/off all the time

Using advanced CAD (Cardboard Aided Design) techniques, I'm making an extender to go behind my spiltter. This might smooth out the air flowing under my car and give me 0.000025% less drag. My sheet of 1/4" composite aluminum was delivered today. Using an ocular guided reciprocating cutting tool, I should be able to cut it out and finish it this weekend. Barring any unanticipated honey do jobs.

Besides the prettiness? I'd say the convenient oil drain cover. :cheers:

The stock pieces also don't stand up to random off road excursions very well :bonk:

I'll take off the protective covering on the final install.