View Full Version : DIY Skidplate

06-01-2010, 07:57 PM
I've done this for every car I own, it's cheap insurance. Here's a rundown on what I did for my bugeye WRX:

(5) M8x1.25 bolts of sufficient length
(10) Large fender washers to fit bolt head
(5) lock washers
(many) nylon washers
(5) or (10) rubber washers

Marker for template
Cutting device (cutoff wheel, jig-saw, sawzall, dremel, shears, etc.)
Drill (for holes)
Sheet Metal brake (or hammer, angle iron, and C-Clamps)


I made a quick cardboard template. Mark the center of the piece, and center it up on your car. Mark the cuts to make to clear the control arms. Mark the three holes along the front, and the two near the center of the front subframe. If you miss a hole, it's not the end of the world, and your skidplate might need some tweaking. Bend up the front edge. Bolt it to the car to make sure it fits:

Now, transfer your holes and lines to the skidplate. Then,cut the angles with a cutoff wheel. Drill out the mounting holes. Oversize them, as positioning isn't critical, and you'll likely need the freedom to mount it. Then bend up the front lip. I did this by setting the bend line in a large piece of angle iron, and whacking the crap out of it with bodywork hammer till it formed a bend line, then I achieved the proper angle with a 4lb mini-sledge. (I like hammers :twisted: )



Test fit your skidplate.

I attached mine with with stainless hardware so that it won't rust. I also used button head allen bolts, so that they wouldn't catch on anything under the car. I used nylon washers to space my skidplate down to add some more clearance for the oilpan/exhaust. I chose nylon to absorb some slight vibration, compress slightly, and it won't rust. I used rubber washers to again isolate the vibrations of the skidplate. My stack up went like this:

Bottom of car
Rubber washer (x2)
Nylon washer (x3)
Fender Washer
Fender Washer
Lock washer
Bolt head


I obviously don't condone stealing street signs, the sign above was bought at a flea market for ~$5, seemed a little under 1/4" thick, and is perfectly sized for most cars.


The skidplate on my WRX has made it up Pikes Peak, Survived Marshaling 100AW, and taken everything else I could throw at it in daily driving without taking any damage.

I had one of similar manufacture on my lowered 240SX. While marshalling at 100AW rally, I came hauling down the road after the stage had re-opened, and one of the rally cars had swept a small boulder onto the road. The car in front of me hit it, and it came rolling under my car, punched a 3" hole about 1" in front of my oil pan. If I didn't have the skidplate, my car would have bled out on some rural road in the middle of the Ozarks. $5 is cheap insurance!



06-01-2010, 08:37 PM
DUDE :shock: epic skidplate is epic :lol:


06-01-2010, 09:56 PM
My STi is low, I beat the crap out of my skid plate.. :)

Good DIY.

06-01-2010, 10:57 PM
I might have to do this. Looks like I'm headed to the flea market!! :twisted:

06-02-2010, 02:32 PM
This is great!

Awesome choice of sign as well.

08-12-2010, 03:32 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

08-12-2010, 04:58 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".

08-12-2010, 09:17 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".


08-12-2010, 10:05 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".


That sucks, the skid plte was made out of a loose gravel sign.

12-04-2011, 07:25 PM
Anyone know a company that manufatures skid plates??? and ball park price on them?

12-04-2011, 08:09 PM

12-06-2011, 12:43 PM
Pics need to be rehosted to a better location.

12-07-2011, 07:22 PM
Carbing, $307.


I have had one for a couple years..

12-19-2011, 09:01 PM
I got my rallyarmor one for like 200 and i love it.

02-13-2012, 07:36 PM
this DIY would be much better if the pics still worked.

02-17-2012, 05:46 PM
this DIY would be much better if the pics still worked.

Man, you kids are needy! :-)

The internet changes a lot in 2 years...


if you don't want to DIY, here's some of the best on the market: http://www.get-primitive.com/

01-19-2013, 12:48 AM
Thanks for the write up! Mine turned out pretty clean

01-22-2013, 11:58 PM
I like the idea what size signs are you guys using 24x24, 36x36? I'm looking to do this with my 08 obs

01-23-2013, 08:51 AM
mine was a 30x30. That left about a half inch down the left and right side and I had to trim where the subframe angled in. Also stopped short of my H brace by about 1/16 of an inch, so very little trimming involved on mine.

03-05-2013, 05:07 PM

07-15-2014, 07:29 PM
Nice write up