Do you like rear spoilers on a Corvette because of the way they look, or the way they function? The answer may depend upon how fast you're going. Though the rear spoiler has become one of the Vette's most noticeable attributes, it serves a scientific and safety-minded purpose, too.
According to the applied laws of aerodynamics, while you drive, air is forced over the rear spoiler, creating downforce upon your car's rear end. This downforce transfers to the rear tires and allows them to have a stronger grip upon the road. The faster you're going, the more downforce is created. That's why a spoiler or wing is just good-looking at 30 mph, but critical to your car's handling at 130 mph.
This month, we're bringing you our "Official Guide to Corvette Rear Wings and Spoilers." Advanced technologies allow aftermarket companies to manufacture these products using a variety of materials and methods-carbon-fiber, resin-transfer molds, fiberglass, and more. In addition to great style and looks, many of them will offer you dramatic improvements in downforce and stability, as compared with the OE piece.
Because choosing a rear-deck spoiler for your Corvette is a personal choice, we didn't favor one of these manufacturers over the others. Instead, we listed them all and allowed them to state their case. All that's left is for you to decide which of them is right for your car.
Advanced Composite Products, Inc. (ACP)
Brief description: The C5 World Challenge 1-inch spoiler was designed in conjunction with GM Motorsports to meet the SCCA World Challenge "rules for the moment," which allowed a rear spoiler to help "trip" the air off the back of the car without causing a great amount of drag. It worked exactly the way it was supposed to and was included in the ground-effects kit offered by GM Performance Parts. (While the spoiler was eventually replaced with a wing, the SCCA failed to remove the spoiler from the rule books, so it was quickly learned that using both the wing and the spoiler increased the flow of the air under the wing and gave even better downforce.)
The C5 World Challenge wing provides even better aero balance and tuneability for the Corvette. The wing is made from carbon-fiber and is built using an autoclave, along with a vacuum-bag-molding process. It comes with mounting brackets integral to the wing body. There is a separate chassis-mounting kit available, which mounts the wing to the rear-chassis crossmember. With this wing-along with the front splitter, undertray, and vented hood-you will have a very broad range of tuning capability.
If you want a wing for looks and not performance, our C5 deck-mounted unit may be the best-looking one on the market. It can be ordered in fiberglass or clear carbon, and mounts on the deck with specially designed brackets that do not require drilling. This wing has not been tested in the wind tunnel, so we won't make any performance claims . . . but it does look good!
Our C6 rear spoiler (21/2 inches high) is designed to trip the air off the back of the car. The clear carbon version is built using an autoclave for maximum strength and minimum weight. It is also available in fiberglass. (A C6 4-inch spoiler is currently being built and will be available after March 30.)
The C6 World Challenge 72-inch carbon-fiber wing is the ultimate Corvette wing. It's built using data developed for the Corvette Racing C6.R and has been resized to work with the World Challenge aero and engine package. It outperforms the C5 wing by producing less drag and more downforce, along with a wider range of tuneability, when used with our front splitter, undertray, and louvered hood. It comes with mounting brackets integral to the wing body. There's a separate chassis mounting kit available, which mounts the wing to the rear-chassis crossmember.
Trademark features: Quality parts, wind-tunnel tested, designed by racers for racers!
Quote from company: "Parts that fit. Parts that function. Built in the USA with materials made in the USA."