towerymt said:
I've seen a LOT of cracked bumper covers on lowered cars, some CF too. I would do a splitter in 1/8" thick aluminum before I used CF. Save the carbon for non-impact areas.
I agree with this also, as pretty as CF may be, its awfully expensive to replace.
I currently have a little splitter on the front of my 240, which extends backwards toward the sumpguard and sticks out approx 30mm from the leading edge of the front spoiler. Its made of 2mm thick ABS plastic, which is really cheap, flexible so it can handle little scuffs across curbs on the track and can handle bumping it occasionally on the driveway, carparks, etc.
When it does break, crack or split (which it will eventually) just cut another piece out and pop rivet it back in place.
Mine currently has a few cracks in the underneath of it, but Im not replacing it until I've got the new springs and koni shocks in the front and done some more front end work.
In the pic below the car is sitting on (approx 40mm lower) Kings springs all round, and the rears have now been replaced with custom made springs and koni shocks, which are the same height but 15% stiffer.
Im going to get new front springs made in the next couple of weeks, 30mm lower again, 15% stiffer than Kings, so once thats done I'll work out how much longer I can make the new splitter, but will probably use some aluminium stays on it attached to the bumper, as even the 30mm one generates reasonable downforce on the nose on track days.
In the pic you'll also see the extra duct in the front spoiler which feeds the custom airbox.
I think the ABS plastic is better than aluminium because its less likely to catch on things, and you dont have to keep straightening it out.
