Spdfrk81

Looking for rear spoiler options that will add some rear downforce but don't want to go to radical like a APR wing. Something more like the Katech rear spolier but not sure if they still make it. I have the GM Racing painted spoiler on it now. I notice APR has a spolier but not sure what the dimensions are, if it's any different than the ZR1 spoiler it looks very similar.

Cyber Greg

ttt

BWF07

What do you use the car for? That has a lot to do with the type of spoiler. Also (and I am not an expert on aero) a rear spoiler will add some down force on the rear of the car , but with that when the rear is forced down, the front also need some down force. These cars are designed for normal driving and that includes highway and I have had mine up to 140 and I noticed no ill handling it did not feel light on the front or rear.

C6C3Vettes

I think Katech makes a CF one as well/

Spdfrk81

Primary use is autocross and track days. I have a ZR1 front splitter to help with front downforce.

BWF07

On most auto cross if not all of them a wing or spoiler is not needed as the courses don't usually allow for a great amount of speed so therefore your need for down force is a minimum requirement. If you are running real high speed event say at Daytona, Sebring, Road America, VIR and so on, you may find that a wing is more to what you really need. If that is not to your liking, then a large spoiler may do what you want.
Is the splitter reinforced or is it just bolted on as per the instructions? If not reinforced, I suggest that you do that, or what will happen is at high speeds, the air will actually force it to try and turn down as if it was going to turn under the car. The front bumper cover that it attaches to does not have the strength to really support it at speed.