Originally Posted by
BlueGlowBoy
Other points are somewhat valid....and so far I have barely picked up anything inside my chassis on the track I mainly run at....
But have you ever heard of something called a "body reamer"?
Also, this does more for keeping dirt out than the Pro-Line driver....plus "not sealing properly" was probably done on purpose to help with air flow, which will help with the cooling problem mentioned...
Just sayin'

Yes, I have used one for many years (body reamer) I was wondering why they didnt actually use one too and show a 100% mounted undertray.
If you will examine all the other undertrays, they seal to the side of the chassis, and have vents on the top, like the one I use on my SC10 and the dozens of others we have sold here.
I am unaware of any cooling problem, after 21 minutes of practice mine came off at 145.
In the pictures it looks like the tires are almost hitting it.
Is it a one size fita all kind of undertray and they are selling it as a SC10 4x4 specific fit?
A traditional undertray does mate along the chassis.
This allows:
1: some ventilation
2: no dirt to enter under the undertray.