Do ZL1 Addons products require drilling?

No. The vast majority of ZL1 Addons products are bolt-on, no-drill installations . They use OEM mounting points, factory hardware locations, and 3M VHB automotive tape. This means no permanent modifications to your vehicle — you can install and remove without any trace.

What is a wicker bill and does it actually add downforce?

A wicker bill (also called a Gurney flap) is a small lip that attaches to the trailing edge of your rear spoiler. It increases the effective angle of the spoiler , generating additional rear downforce without the drag penalty of a larger wing. ZL1 Addons wicker bills are available in multiple sizes and materials — from standard Lexan to full carbon fiber.

What material should I choose for my ZL1 Addons splitter?

HDPE (3/8" thick) is the most popular choice — it is extremely durable, flexible enough to absorb impacts from speed bumps and road debris, and will not crack or shatter. For show car builds or weight-sensitive track cars, carbon fiber offers a premium finish and lighter weight at a higher price point.

Will a front splitter scrape on speed bumps?

If your car is lowered, some scraping is possible. ZL1 Addons designed their splitter guard washers specifically for this — stainless steel washers with a 45-degree bevel that glide over road surfaces instead of catching. Pairing a splitter with guard washers is the recommended setup for street-driven cars.

Does ZL1 Addons make parts for the Ford Mustang S650?

Yes. ZL1 Addons has a growing lineup for the 2024+ Ford Mustang S650 and Dark Horse including front splitter extensions, wicker bills, rear diffusers, tow hooks, and rock guards. New S650 products are being released regularly — check our FFP brand page for the latest inventory.

What is the difference between ZL1 Addons and ACS Composite?

Both brands make aero parts for American muscle cars. ZL1 Addons focuses on bolt-on, no-drill designs using HDPE, ABS, and carbon fiber with coverage across 30+ platforms. ACS Composite specializes in their patented PC Composite material and focuses primarily on GM platforms (Camaro, Corvette). ZL1 Addons generally offers broader vehicle coverage and more material/price tier options.

Does FFP install ZL1 Addons products?

Yes. Our Thousand Oaks, CA shop regularly installs ZL1 Addons front splitters, rear diffusers, wicker bills, side skirts, and full body kits . Professional installation ensures proper alignment, secure mounting, and a clean finished look. Walk-ins welcome during business hours.

Do ZL1 Addons products come with hardware?

Yes. ZL1 Addons products ship with all necessary mounting hardware, 3M VHB tape, and installation instructions . Most installs can be completed in 30-60 minutes with basic hand tools. Replacement hardware packs are also available if needed.