TBW Underbody Protection Panels - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DarkPira7e · 12-06-2022, 12:11 PM

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

norcalpb · 12-06-2022, 05:11 PM

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

DarkPira7e · 12-06-2022, 05:38 PM

Quote:

Originally Posted by norcalpb

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

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

dynarun55 · 05-06-2023, 07:25 PM

Quote:

Originally Posted by DarkPira7e

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

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

DarkPira7e · 05-06-2023, 08:03 PM

Quote:

Originally Posted by dynarun55

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

blsfrs · 05-07-2023, 11:12 AM

Quote:

Originally Posted by DarkPira7e

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.

DarkPira7e · 05-07-2023, 01:39 PM

Quote:

Originally Posted by blsfrs

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

Turdinator · 05-07-2023, 11:15 PM

What is the advantage these have over the stock pieces?

DarkPira7e · 05-08-2023, 07:50 PM

Quote:

Originally Posted by Turdinator

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

blsfrs · 05-08-2023, 08:29 PM

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.

Wally86 · 05-09-2023, 08:19 AM

Quote:

Originally Posted by Turdinator

What is the advantage these have over the stock pieces?

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

NoHaveMSG · 05-09-2023, 11:00 AM

Quote:

Originally Posted by Turdinator

What is the advantage these have over the stock pieces?

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

blsfrs · 05-28-2023, 09:28 AM

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

12-06-2022, 12:11 PM	#1
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,160 Thanks: 3,447 Thanked 4,340 Times in 2,188 Posts Mentioned: 34 Post(s)	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 Attached Images __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block Last edited by DarkPira7e; 12-06-2022 at 12:28 PM.

05-07-2023, 11:15 PM	#8
Turdinator Señor Member Join Date: Aug 2012 Drives: 86 GT/'74 TA22 Celica/Kangaroo Location: Melbourne, Australia Posts: 1,706 Thanks: 1,107 Thanked 769 Times in 480 Posts Mentioned: 13 Post(s)	What is the advantage these have over the stock pieces? __________________ 1974 TA22 Celica 2013 86 GT

05-08-2023, 08:29 PM	#10
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,469 Thanks: 2,801 Thanked 1,486 Times in 702 Posts Mentioned: 13 Post(s)	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. Attached Images

05-28-2023, 09:28 AM	#13
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,469 Thanks: 2,801 Thanked 1,486 Times in 702 Posts Mentioned: 13 Post(s)	I'll take off the protective covering on the final install. Attached Images

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12-06-2022, 05:11 PM	#2
norcalpb Senior Member Join Date: Oct 2013 Drives: 2013 BRZ, 2023 Model 3 Location: SF Bay Area Posts: 2,348 Thanks: 1,258 Thanked 906 Times in 592 Posts Mentioned: 15 Post(s)	That looks great! Does the front piece simply replace this oem piece?:

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