Extreme Online Store - #1 Aerodynamic Car Parts Store | USA

BMW’s tech game is strong—but with the right accessories, it’s unstoppable. You already have intuitive systems and a cutting-edge infotainment setup. Now imagine pairing that with wireless charging pads, smartphone mounts, or even ambient lighting kits that set the perfect mood. Our team at Extreme Online Store curates accessories that work with your BMW, not against it. For example, we carry pieces that sync seamlessly with your G80 M3 ’s console layout or G82 G83 M4 M-Performance Side Skirts ’ contours. It’s not just about upgrades—it’s about enhancements that feel like they were factory-installed. Style that Speaks Your Language From Carbon Fiber to Customized Detailing Luxury isn’t always loud. Sometimes, it’s in the details—like a dash of carbon fiber that catches the light just right or a set of paddles that feel like they were crafted just for your hands. That’s where our G80 M3 G82 G83 M4 Carbon Fiber Side Skirts come into play. While primarily exterior, they represent a des...

Upgrading your Subaru WRX isn’t just about performance—sometimes, a bold, aggressive look makes all the difference. If you’ve been thinking about customizing your front end, a Subaru WRX / STI CS Front Mesh Grille Vent Cover is the perfect way to level up your ride. It doesn’t just look cooler—it also improves airflow, protects your engine bay, and makes your car stand out. And guess what? You don’t need to be a car expert to pull it off. Let's walk through the simple steps of installing a 2015-17 Subaru WRX/STI CS Style Front Grille Cover—all with help from the pros at Extreme Online Store. Why Upgrade Your WRX Front Grille? Aesthetic Meets Functionality Sure, the stock grille gets the job done—but it doesn’t exactly scream personality, right? Upgrading to a CS Style Front Mesh Grille adds a sporty, aggressive touch to the front of your 2015-17 WRX/STI , instantly boosting curb appeal. Plus, it allows better airflow into your engine bay, which helps with cooling during high-perf...

So, you're cruising in your 2016-21 Honda Civic Hatchback , loving the sleek lines and sporty feel—but deep down, you're wondering how to take it to the next level. You’ve seen them on the streets or at car meets—those clean, aggressive roof spoilers that just look right. But here’s the question: Should you add a Mugen or Spoon roof spoiler to your Honda Civic? Let’s break it down like a real conversation—no techy jargon, no fluff—just real talk for real car enthusiasts. What’s the Big Deal with Roof Spoilers Anyway? Aerodynamics Meets Aesthetics Think of a roof spoiler like a cherry on top of your performance sundae. It’s not just there to look good (though it totally does). These spoilers—especially Mugen and Spoon styles—are designed to tweak your car’s aerodynamics ever so slightly. They reduce lift at high speeds, giving you a little more grip and control. But let’s be honest—most of us are more interested in that race-ready, track-inspired look. Whether you're parke...

Your Cadillac CT5 or CT4 already turns heads—but what if it could turn more ? If you’re a proud owner of a 2020–24 Cadillac CT5-V or CT4-V, there’s a way to elevate your ride from sleek to savage . Let’s talk about transforming your V-Series with Blackwing Aero Kits and performance mods that don’t just look good—they deliver . And when it comes to premium aftermarket parts, Extreme Online Store is the real MVP. Not only do they offer high-quality gear for your Cadillac, but they also back it with fitment guarantees and top-tier customer service. So, buckle up—this guide is going to show you how to give your Caddy that true Blackwing attitude. Why Upgrade Your 2020–24 Cadillac CT5-V or CT4-V? Add Performance to the Personality Sure, your CT5-V or CT4-V already packs a punch, but there's always room for more. Whether it's improving aerodynamics, reducing weight, or squeezing out extra horsepower, performance upgrades can take your ride to the next level. Think of it like giv...

Owning a 2015–2023 Ford Mustang is more than just having a car—it’s about living the Mustang dream. Every drive feels special, whether it’s a quick trip to the store or a weekend cruise down the highway. But what if you could make your Mustang stand out even more? In 2025, the right accessories can turn your ride into a true head-turner and make every journey smoother, safer, and a lot more fun. Let’s dive into the top accessories every Mustang owner should consider this year, with answers to the most common questions and some real-life scenarios that show just how much these upgrades can change your experience. The Power of Personalization Imagine pulling into a car meet. All eyes are on your Mustang—not just because of its legendary shape, but because of the way it’s been personalized. The rear spoiler catches the sunlight, the front bumper looks like it just rolled off the racetrack, and every detail feels just right. That’s the feeling you get when you pick the best accessories for...