Ground-Effects Kits
A ground-effects kit consists of bolt-on fiberglass or urethane side ground-effects panels and new bumper covers to match. A body kit is one of the most noticeable ways to improve an ordinary car's appearance. A ground-effects kit will give the car a more aggressive and unique appearance. Because all W-body cars are different, you'll have to get a ground-effects kit designed specifically for your car.

Rear Wing Spoilers
Adding a rear wing spoiler to the trunk of your W-body can visually enhance its appearance and give it a more aggressive profile. On a traditional rear-drive race car, a rear spoiler channels air around it to provide downforce on the rear end, which increases traction at high speeds (>100mph). On a front-drive vehicle, a rear wing is just decorative. However, they can also be functional. A rear wing with a bright LED brake light will improve safety, as properly functioning LED brake lights are brighter, more noticeable, and have a 0.2 second faster response time than normal brake lights. The 0.2 second difference may sound very small, but it could mean the difference between a close-call or a disaster.

See ground-effects kits & rear wings for...
First Generation W-Body

1988-1996 Buick Regal
1990-1994 Chevrolet Lumina
1988-1997 Oldsmobile Cutlass Supreme
1988-1996 Pontiac Grand Prix

Second Generation W-Body

1997-* Buick Century/Regal
1995-* Chevrolet Lumina/Monte Carlo
1998-* Oldsmobile Intrigue
1997-* Pontiac Grand Prix

If you can't find the right rear spoiler, you might look into buying a universal one.