2007 Honda Civic Si Sedan - Aero Kit and Wheel Install - Super Street Magazine

The first installment of our street-legal Si is the perfect companion for those of you who've just recently sprung for a new car purchase and are curious how to go about modifying it, without voiding the warranty. It's simple: most dealers offer Honda's Factory Performance line (like Penske Honda, who sold us ours) as one of their accessory options. This means these are parts you can add to your car easily, without worrying about your warranty one bit because you are guaranteed Honda quality. Although most of the parts offered are cosmetic, Honda does produce performance-related accessories, like lowering springs and exhausts. But for the four-door Si, you're limited to a mild aero kit, fog lights and, from what we're told, lowering springs have just been approved for release (we're awaiting confirmation). Follow along as we give our Project Si the first of its modifications, starting with the HFP aero add-ons, upsized wheels and foglights.

Front Under Spoiler/Fog Lights

Side Under Spoiler

Rear Under Spoiler

Great success! The HFP under spoiler/aero kit fits like a glove. Additionally, we upsized the factory wheels to the 18-inch, gunmetal HFP optional wheels with Dunlop rubber. Offset-wise, the wheels could stand to stick out a little more now that the body kit extends the lines of the car out. We'll most likely solve this problem with a more aggressive set of wheels in the future. For now, we're happy our upgrades stay within the factory warranty guidelines.

Penske Supports You
Believe it or not, Penske and many other Honda dealers across the nation support your cause to modify, whether it's within the Honda family or with products that keep in line with keeping our air clean. Penske not only stocks the entire HFP product line, but plenty of other street-legal performance products that will keep you from getting pulled over. Best of all, any parts sold through Penske - HFP or aftermarket - are fully covered under and will not void your warranty! (Please check with your local Honda dealer to see their policies regarding aftermarket accessories.)