GM Rocker extension
Proof they don't go far enough back. A Tracker showed where Track rubber hit his C8. This occurred after the body area where the GM extensions end (pointed area on lower left of pic.)
I added GM "Splash Guards" as soon as I got my C8 home. Did little to stop pebbles on the road edges in the rural area where live from marking where the Tracker showed Track rubber struck to his rocker panels. It took about 6 weeks for my C7 Carbon Side Skirts to arrive. Fortunately they covered all marks and stopped any after from being visible. Like the full length side skirts I added to my 2014 C7, the Stage 2 Aero full length side skirts on my 2017 Grand Sport worked like the C8 side skirts have for 15 months. All marking is under the skirts.
Proof they don't go far enough back. A Tracker showed where Track rubber hit his C8. This occurred after the body area where the GM extensions end (pointed area on lower left of pic.)
I added GM "Splash Guards" as soon as I got my C8 home. Did little to stop pebbles on the road edges in the rural area where live from marking where the Tracker showed Track rubber struck to his rocker panels. It took about 6 weeks for my C7 Carbon Side Skirts to arrive. Fortunately they covered all marks and stopped any after from being visible. Like the full length side skirts I added to my 2014 C7, the Stage 2 Aero full length side skirts on my 2017 Grand Sport worked like the C8 side skirts have for 15 months. All marking is under the skirts.





I bought mine from C7 Carbon (a Platinum Forum Vendor) on an early introduction special. Can buy just the Side Skirts painted carbon flash (like mine) for $1249. Also no need to drill a hole in the fender. One OEM bolts and 6 or 7 rivets under the rocker panels is all that is needed!
I used some 3M tape in addition to OEM bolt and rivets. But belt and suspenders, really not needed.
Last edited by JerryU; Jan 27, 2022 at 07:57 AM.













