Performance parts for cars are more than bolt-on upgrades—they’re the foundation for building a machine that reflects your passion and pursuit of speed, style, and control.
Here, we break down 11 essential upgrades that pair advanced aerodynamics, true carbon fiber craftsmanship, and measurable gains to help you shape your vehicle into something unmistakably yours, both on the road and at the next car meet.
1. Carbon Fiber Body Kits
Step into the world of high-stakes modification. Real enthusiasts chase results, not empty trends. Carbon fiber body kits have become the ultimate statement piece, offering gains you can both feel and see. Aimed at those who aren’t interested in settling for stock, these kits merge function with a sense of purpose.
Why Carbon Fiber Body Kits Elevate Your Game:
- Slice away excess weight — Carbon fiber shaves kilos off your build, giving you a real edge in power-to-weight, acceleration, and handling.
- Turn heads at every meet — The deep gloss and distinctive weave mark out serious vehicles before the engine’s even started.
- Command respect on the road and at the track — Reduced weight drops the center of gravity, making you and your car more confident on fast corners.
- Built for your car, not bolted as an afterthought — Our BMW G82 M4 Full Carbon Fibre Kit fits like it came from the factory but stands out even among exotics.
- Built to last — Each panel uses pre-preg dry carbon and high-gloss UV protection, guaranteeing that bold look won’t fade.
- Perfect for: Drivers chasing the apex, anyone craving a show-stopping look with authentic track function, owners who demand true OEM precision.
Carbon fiber upgrades are the gold standard for reducing body weight and unlocking sharper, more responsive handling.
2. Gloss Black Aerodynamic Splitters
Attention to detail divides the new from the known. Gloss black splitters do more than add visual punch; they defend your aero and sharpen your stance without compromise. This level of detail gives you a subtle but unmistakable advantage.
Rapid Results with Gloss Black Splitters
- Tough enough for daily action — ABS and composite builds resist knocks and scrapes from curbs or debris.
- Level up your daily driver — These aren’t just for show cars; every journey feels more direct and engaging behind a gloss black blade.
- Boost real-world stability — By channeling airflow and adding downforce, you get high-speed confidence that stock bumpers can’t deliver.
- Mix and match to suit your taste — Splitters and extensions can be upgraded piece by piece to fit your ideal look.
- Perfect for: Builders seeking quick, visible transformation, drivers wanting affordable aerodynamic gains, anyone after our distinctive “factory plus” style.
Our ASM Gloss Black Splitters are engineered, tested, and guaranteed for perfect fitment — no guesswork, just instant presence.
3. Performance Cat-Back Exhaust Systems
Serious power gains don’t come from volume alone, but when you want to feel every shift, a premium cat-back exhaust is the fastest way to hear — and feel — your progress. Skip the drone and go straight for spine-tingling sound matched with measurable performance.
What a Proper Cat-Back Delivers
- Extra horsepower you can actually use — Less backpressure means greater gains on both stock and tuned engines.
- Sound that sets you apart — Choose from quad tips, valvetronic setups, and deep resonant tones that match your mood or setting.
- Stainless for the long haul — Rust-resistant, smooth-flowing tubing built to last, whatever the weather or road throws at you.
- Perfect for: Drivers who want their car to announce its power, anyone needing a true performance foundation for future upgrades, those who expect durability as standard.
See our ASM Valvetronic Cat-Back System for the BMW M3/M4 for a taste of how smart design translates into raw presence.
A great exhaust is your voice on the road — everyone hears results before seeing them.
4. High-Flow Downpipes (Sport Cat and De-Cat)
Turbocharged cars demand more. Factory downpipes choke potential. Upgrading unleashes your build’s true personality and gives you real thrust—especially when you add a tune. If you want results you can measure on the dyno and feel at the pedal, don’t skip this step.
What High-Flow Downpipes Mean for Your Build:
- Faster spool and fatter torque — Turbo wakes up sooner, mid-range hits harder, and throttle becomes addictively quick.
- Sport cat for the street, de-cat for the track — Get the power you crave and choose how wild you want to go.
- Straightforward fit — Modern CNC flanges ensure strong, precise placement specifically designed for your engine bay.
- Best suited for: Owners of turbocharged models chasing +20 to +50 hp with a tune, anyone who sees performance as more than a number, drivers who love max response.
Our ASM Performance Downpipes, such as the S58 Sport Cat, pair engineered flow with all the right certifications, so you know you’re covered.
5. Custom Forged Wheels
The wrong wheels hold you back even after every other upgrade. Forged wheels are a complete reset — tough, light, designed for your car. Each set changes how your vehicle drives, steers, and looks from every angle.
Upgrade Benefits with Forged Wheels:
- Noticeably lighter for sharper handling — More nimble, more grip, better 60–130 times.
- Made for power and pride — Every ASM Forged Wheel offers custom sizing, offsets, and finishes to make your vision reality.
- Built to withstand big brake setups — Clear those six-piston calipers with room to spare and show them off.
- Best for: Enthusiasts who appreciate both form and function, anyone experiencing brake fade or dull ride quality, track day devotees who want tough-as-nails reliability.
Forged wheels don’t just look good; they lower unsprung weight, making every upgrade work harder for you.
6. Valved Muffler Technology
You want choice. Wake the neighbors, or keep peace during early commutes? Valved mufflers are the way forward for dual personalities.
Valved tech gives you control. Open up for throaty, race-inspired sound. Close the valves for refined calm. There’s nothing else with this flexibility.
- Perfect for: Daily street drivers who demand comfort, track fans craving volume, owners with zero interest in compromise.
- Modern systems, such as our solutions, often link to drive modes. Toggle from quiet to aggressive at the push of a button.
- These units are increasingly standard on luxury and supercars. We make this tech affordable and easy to integrate for your upgrade path.
You can switch your style to match your mood—without sacrificing power or daily use. That’s peak personalization for the true enthusiast.
7. Cold Air Intake Systems
Every horsepower boost starts with air. Cold air intake systems are the gateway for more oxygen, giving your car power you can feel and a sound that cues adrenaline.
Designed to remove factory restrictions, our intake upgrades help you hit harder off the line. Even better, they provide an instant auditory thrill under throttle. No need for a shop full of tools—most installs happen in an afternoon.
What to Expect with a Cold Air Intake:
- Sharper response — Engine breathes deeper, throttle answers quicker.
- Tuning-friendly foundation — Works best as part of an intake + exhaust + tune combo.
- Cooler air, denser power — Relocates filters away from engine heat for results that last through traffic and runs.
- Visual appeal — Sleek tubing and premium finishes amp up the style under your hood.
- Best fit: Anyone starting a bolt-on journey or wanting daily drivability with a sporty edge.
The right intake is both your first mod and your last regret—real gain, easy to install.
8. Carbon Fiber Spoilers and Rear Wings
Aerodynamics create the edge in every corner. Carbon fiber spoilers bring the race look and actual road holding right to your trunk. We craft every spoiler for both track function and lasting style.
Upgrade with carbon and you’re not just signaling performance—you’re earning it. Each weave announces purpose and polish. You’re not settling for an off-the-shelf fit.
Standout Features of Carbon Spoilers
- Track-tested, road-proven — Designed for real downforce and confidence, not just looks.
- Lightweight build — Maintains structural strength while lowering weight you don’t need.
- Model-specific fit — No guesswork, just seamless integration with your bodylines.
- Proven durability — Every spoiler goes through strict quality checks for longevity.
- Perfect for: Drivers who value authentic motorsport design, anyone chasing max grip or sharper looks.
Explore our ASM Carbon Spoiler line for high-gloss, exact-fit options that make a bold statement from every angle.
9. Adjustable Coilover Suspension Kits
No single upgrade transforms a car’s stance, comfort, and cornering like adjustable coilovers. Factory suspension won’t cut it when you crave both show and performance.
Tune height and damping to control every detail. Drop that wheel gap. Gain body control on fast roads and friendly ride compliance for city streets.
How Coilovers Elevate Real-World Driving:
- Tailored ride — Adjust height, firmness, and sometimes camber to match your vision and needs.
- More grip, less roll — Lower center of gravity means predictable, thrilling cornering.
- Durable under daily abuse — Aluminum construction, quality bushings, reliability for years ahead.
- Camber adjustment — Get wheel fitment and handling dialed to your preference.
- Best if: You want a car that’s ready for both daily grind and weekend track days.
Serious coilovers mean your fitment, ride, and handling finally work together.
10. Big Brake Kits (BBK)
Power is pointless if you can’t control it. Big Brake Kits let you brake deeper, hit corners faster, and stay safe when it counts. You get real stopping strength and unbeatable thermal stability.
Our customers see it every day: Add power, upgrade your brakes, feel the difference under your foot. Oversized rotors, multi-piston calipers, and performance pads are the trifecta for confidence and control.
Key Advantages of BBK:
- Fade-resistant — Stop after stop, heat dissipation keeps your setup strong.
- Huge visual upgrade — Color-matched calipers and massive discs scream performance.
- Improved safety — More consistent brake feel, especially under spirited driving.
- Room for wheels — Pairs perfectly with ASM forged wheel setups.
- Best for: Anyone increasing horsepower, track enthusiasts, or those chasing a full performance package.
11. High-Performance Tires
Every upgrade comes down to one thing: grip. High-performance tires turn every bit of added power, braking, and aero into actual control.
Pick modern compounds for maximum contact in both dry and wet. Sidewalls boost response. W, Y, and Z speed ratings mean you trust your tires at any pace.
What You’ll Get:
- Quicker launches, shorter stops
- Stable, sure-footed highway handling
- The missing link for unlocking your car’s full upgrade potential
- Best for: Drivers focused on lap times, fast road stability, or squeezing every last second from 0-60 runs.
Don’t let lousy tires hold back your build.
Choosing the Right Performance Parts for Cars: A Practical Guide
Carving out your signature look and feel isn’t about stacking random parts. It’s discipline. Results come from balancing function and show, then picking upgrades with real synergy.
Quick Wins for Smart Upgrading:
- Start with your goals—Are you building for track, daily, or show?
- Focus on fitment—Choose options engineered for your specific vehicle.
- Pair parts that work together—Aero plus wheels, intake plus exhaust, brakes with forged wheels.
- Lean on expert support—Trusted installation and honest advice save you from expensive errors.
- Upgrade stepwise—Begin with splitters or tires, move up to full carbon kits or coilovers as your ambitions grow.
Conclusion
Performance parts build more than stats—they build confidence, presence, and pride. Each upgrade is your step toward a car that delivers on every promise.
The more you care about the small details, the bigger the transformation becomes. We’re here to fuel your drive, answer your questions, and back every claim. Your car, your vision, your pace—let’s make it a reality together.
