When it comes to transforming your car’s speed, agility, and style, choosing the right vehicle performance parts is everything.
We cut through the noise to spotlight 11 must-have upgrades—carbon fiber aerodynamics, premium wheels, responsive suspensions, and more—that deliver genuine results.
This guide shows you exactly where to invest for noticeable gains in both driving dynamics and appearance, whether you’re building for the street or the track.
1. Carbon Fiber Aerodynamic Body Kits
Aerodynamics is the game changer if you’re seeking true transformation—boosts in grip, sharper looks, and serious weight cutting. Carbon fiber body kits aren’t cosmetic: they’re built for enthusiasts who expect real gains and maximum street presence. We see firsthand how these systems deliver on daily drivers and aggressive track machines.
Key wins with carbon fiber aero parts:
- Kits use dry pre-preg carbon, making components up to 70% lighter than traditional wet carbon. The result is a chassis that snaps through corners and accelerates with less effort.
- UV-resistant finishes keep your investment looking just-polished for years. No yellowing or fade.
- Bolt-on fitment is engineered for your exact vehicle, avoiding gaps or awkward installs.
- Every element, from splitters to rear diffusers, works together to increase actual downforce—noticeable stability at speed.
- Our warranty and fulfillment model means you get peace of mind: 2+ years’ warranty, rapid support, and fitment guaranteed.
The best-fit driver? If you want lightweight advantage, aggressive lines, and track-tested tech—all built with obsessive precision—ASM Design body kits are a powerful step up.
Carbon fiber aero isn’t flex. It’s about transferring every ounce of power and poise to the road.
2. High-Flow Performance Exhaust Systems
A high-flow exhaust does more than add sound; it changes how your car feels under throttle. Shave tenths off your 0-60, hear your powerband come alive, and eliminate drivability issues common with restrictive factory setups.
These are the core advantages:
- Instant throttle response and up to 10% more power in many street builds. Some turbo applications net 50+ HP.
- Stainless steel and mandrel-bent pipes keep gases flowing, lowering back pressure for both NA and turbo engines.
- Valved (valvetronic) options let you choose your sound—loud or reserved—without losing refinement.
- Fitting is a breeze if you select a system designed around your model. No hacks or hacksaws.
- Many come lifetime-warrantied and tuned for direct gains with intakes and downpipes.
Performance exhausts cater to drivers who need measurable upgrades, not just noise, and who value seamless install. Run a better quarter-mile. Get more refined pops and crackles. Step up if you crave noticeable difference with everyday comfort.
3. Forged Lightweight Alloy Wheels
Wheels are not just for looks—they’re the fastest way to upgrade response, reduce weight, and fit big stoppers. Enthusiasts aiming for the complete package always start here.
Payoff you can feel:
- Forged from a solid billet, they deliver up to several pounds of unsprung weight savings per corner, greatly improving acceleration and steering.
- Strength trumps cast options. Hit potholes or take corners hard without bending.
- Custom offsets fit larger brakes and wider tires, giving you freedom to tailor performance and fill wheel arches.
- Choose from multiple finishes, designs, and sizes up to 23″—all while keeping street legality and durability in mind.
- Ideal for cars already running brake upgrades or seeking both cosmetic and dynamic overhauls. We’ve seen forged wheels unlock peak response in BMW M, Supra, and AMG builds.
Those chasing the best blend of weight reduction, form, and real-world results trust forged solutions for both road and show impact.
4. Performance Cold Air Intakes
Go for a cold air intake if you want direct torque and horsepower gains—plus a sharper-sounding induction note. Not all intakes deliver; select an option calibrated for your make and paired with the right sensor compatibility.
What you actually get:
- Up to 7+ HP and 18 lb-ft torque when paired with proper exhaust and tuning.
- Reusable high-flow filters and heat shields keep airflow optimal, dirt out, and your engine safe.
- Many modern systems raise airflow by 28% or more, especially on turbocharged or tuned cars.
- Correct unit selection ensures you don’t trigger check engine lights or disrupt MAF/MAP sensors.
If you want every bolt-on to count, and you expect proven, dyno-backed figures (some cars see a 0.4-second 0-60 improvement), this is your starting move for efficient power.
Pair intake and exhaust upgrades to multiply performance and keep your build responsive.
5. Stainless Steel Downpipes (Sport Cats/De-Cat)
Downpipes are where turbocharged engines unlock their true potential. Upgrading your restrictive factory unit is a must for anyone who is serious about power, sound, and boost response.
Here’s why enthusiasts insist on a downpipe upgrade:
- Major power jump: up to 40+ HP with supporting mods.
- Choice between 200-cell sport cats for emissions compliance or full de-cat for max flow, depending on your needs.
- Turbo spool and midrange torque come alive, letting you harness more power without lag.
- 304L stainless, TIG welded construction means it survives intense track and street use.
- A deep, aggressive exhaust tone that signals more than just style.
Downpipes shine for boosted platforms (BMW M, Audi RS, Supra, etc.), delivering return on investment where factory options choke output.
6. Advanced Coilover Suspension Systems
The difference between a fast car and one that inspires confidence in every corner comes down to suspension. Adjustable coilovers provide the foundation for precise, tailored performance whether you daily or track your vehicle.
Coilover systems let you:
- Adjust ride height and damping, finding the sweet spot for comfort or competition.
- Control body roll, sharpen turn-in, and maximize tire contact with the road.
- Add camber/caster plates to fine tune geometry. Critical for staggered or ultra-wide setups.
- Monotube and twin-tube designs include nitrogen charge for peak resistance to fade.
Perfect for drivers who want total control, from slammed street builds to serious weekend warriors looking for repeatable handling gains.
Invest in suspension if you want consistent grip, safety, and composure through all conditions.
7. Big Brake Kits (BBKs)
You can add horsepower all day, but if your brakes can’t handle it, you’re risking more than just lap times. Upgrading to a big brake kit is non-negotiable for any enthusiast hunting for real-world speed, safety, and confidence at every stop.
What real upgrades look like
- Multi-piston calipers and larger rotors disperse heat and end fade, letting you drive hard lap after lap.
- Slotted or drilled rotors keep bite sharp and clear water fast.
- Kits fit most performance models but often require upgraded wheels for clearance. Plan your setup for max compatibility.
- BBKs give you shorter 60-0 times, smoother pedal feel, and let you exploit every bit of performance from your tires.
Perfect for owners who push their builds, track drive, or just want peace of mind in every high-speed scenario.
When you want relentless stopping power and zero compromise, BBKs deliver the authority you need.
8. High-Performance Tires
Your tires are your only contact with the ground. Everything rides on that. The right set turns upgrades into tangible traction, grip, and launch—no hype, just facts.
UHP and R-compound options give you:
- Maximum grip for both cornering and acceleration, so every horsepower is put to use.
- Specialized tread designs for dry grip, heat resistance, or even year-round performance if you demand versatility.
- Big drops in braking distances and immediate improvement in road feel.
- Choices in speed rating, treadwear, and compound—match the set to your goals and driving climate.
If you’re upgrading anything else but skipping tires, you’re leaving performance on the table. Commit to the full stack.
9. Engine Control Unit (ECU) Tuning and Performance Chips
Every modern car is held back by conservative factory software. Unlock real gains and adapt to all your mods with ECU tuning.
Why tuning moves the needle:
- Dial in air/fuel ratios, ignition, boost, and more to match your parts combo. Factory tunes outsource your power—take control back.
- Piggyback modules for mild gains, custom remaps for peak, model-specific performance.
- Perfect pairing for intake, turbo, or downpipe upgrades (a must after heavy bolt-ons for full safety and reliability).
- Trusted solutions safeguard your engine. Don’t risk a no-name tune—our advice: protect your investment and opt for high-quality, vehicle-specific software.
Best suited to drivers who want measurable, dyno-tested performance and total system integration.
10. Carbon Fiber Engine and Interior Trim Accessories
Performance is more than numbers. Visuals matter, too. Carbon fiber accessories in the cabin or engine bay signal you’re serious. Built for supercar style, these details transform first impressions fast.
What gets the job done:
- Real pre-preg carbon for engine covers, consoles, trims, and shifters—not faux vinyl overlays.
- UV-stable, show-level gloss, and exact fitment using existing clips or screws.
- Pairs perfectly with exterior aero for a cohesive, high-impact look.
- ASM Accessories line covers over a dozen models. Fast shipping gets you a transformation, not a time sink.
For builders focused on style with substance, these upgrades provide a professional, finished presentation with zero hassle.
When you want every detail right, carbon fiber trim delivers perfection that lasts.
11. Sway Bars, Strut Braces, and Chassis Bracing
Handling isn’t luck. It’s structure. Sway bars, braces, and chassis upgrades keep your vehicle tight and composed, even when you push the limits.
These are the heavy hitters:
- Sway bars kill body roll so you can attack corners and stay flat.
- Strut braces stiffen crucial mounting points, delivering sharper steering.
- Chassis bracing eliminates flex, maximizing tire contact and translating every input.
- Lightweight alloy or carbon keeps weight low and strength high.
If you run aggressive suspension, wide wheels, or take your car to spirited drives, chassis upgrades are the glue that brings your build together.
How to Choose and Combine Vehicle Performance Parts for Maximum Impact
With endless options, knowing what works together is everything. Here’s your blueprint to maximize results and limit headaches.
Dominant strategies for the driven builder:
- Always start with tires and aerodynamics. These upgrades set the tone for every other mod you add.
- Next: Wheels, suspension, brakes. They all impact each other—fitment, compatibility, and overall performance count.
- Engine upgrades (intake, exhaust, tuning) come after. Pair these in stages to match airflow and fueling.
- Always ask: Does this part suit my car, needs, and local regulations? Don’t skip research on warranties, install requirements, and fitment.
- Pair upgrades (like brakes and wheels, or aero and coilovers) for synergy—balance short-term gains with your long-term vision.
Anticipate questions on install, warranty, and support. With ASM Tuning, you get fast shipping, guaranteed fitment, deep support, and social proof (more than 35,000 five-star reviews).
The right combination multiplies your gains and future-proofs your investment.
Conclusion
Every part you choose moves your build forward. Make each upgrade count for results you see, feel, and trust behind the wheel. At ASM Tuning, we guide you from first mod to final assembly—so your car becomes a true statement of passion and performance. Carve your path. Drive greatness.
