Best Alfa Romeo Giulia Quadrifoglio Mods (2017-2019)

The 2017-2019 Alfa Romeo Giulia Quadrifoglio is one of the most rewarding sport sedans ever built, and the right upgrades make it even sharper. Alfa's hand-assembled 2.9L twin-turbo V6 — developed with Ferrari and built from all-aluminum construction — already sends 505 horsepower at 6,500 rpm and 443 lb-ft of torque to the rear wheels, launching the Giulia Quadrifoglio to 60 mph in 3.8 seconds and on to a 191 mph top speed. But the factory exhaust, brakes, and ride height leave real performance and character on the table. At NLP Performance in Tampa, FL, we spec and ship Giulia QV parts every week, so this roundup covers the seven upgrades our customers order most — ranked by impact, not marketing.

Why the Giulia Quadrifoglio Deserves Real Upgrades

The Alfa Romeo Giulia Quadrifoglio is a rear-drive super sedan built around a Ferrari-derived 2.9L twin-turbo V6 making 505 hp and 443 lb-ft, backed by an 8-speed ZF automatic and a curb weight of roughly 3,649 lbs. From the factory it already runs 0-60 mph in 3.8 seconds, an 11.8-second quarter mile, and a 191 mph top speed — numbers that embarrassed a lot of German competition in 2017.

So why modify a car that fast? Because the QV's biggest weaknesses are all bolt-on fixes. The stock exhaust muffles one of the best-sounding V6s on sale. The optional carbon-ceramic brakes are brilliant but ruinously expensive to service, and the standard steel rotors fade under repeated track abuse. And the factory ride height leaves a visible fender gap that hurts both looks and roll stiffness. Every upgrade in this guide targets one of those weak points without touching the powertrain's factory reliability. We install and ship these exact parts from our Tampa, FL shop, and the picks below reflect what actually holds up on the street and the track.

Best Exhaust: Akrapovic Evolution Line Titanium

The best exhaust for the Alfa Romeo Giulia Quadrifoglio is the Akrapovic Evolution Line titanium cat-back, which reduces exhaust weight by over 9 lbs while transforming the 2.9L V6 into a genuine race-bred soundtrack. The muffler, collector, and internal resonator are cast and formed from lightweight titanium, the link pipes are high-grade stainless steel, and the system finishes in handcrafted carbon-fiber and titanium tailpipes. Akrapovic's in-house foundry produces the valve housing and the X-junction inside the muffler, which mixes exhaust pulses at a precise ratio for that signature crackle on overrun.

The system retains the factory-controlled exhaust valves, so it stays civil at a light-throttle cruise with no highway drone, then opens into a full racing snarl above 4,000 rpm. Because it is a direct fit onto the stock downpipes, install is a bolt-on job with no cutting or welding — most shops complete it in about two hours. The matching Akrapovic Evolution Link Pipe Set ($2,145.95) is included in this kit and sharpens throttle response by smoothing the transition from the OEM downpipes.

Budget Exhaust Alternative: Remus Cat-Back

If the Akrapovic is out of budget, the Remus cat-back for the 2.9L V6 QV ($418.64) is the value pick. It is a stainless-steel valved system that deepens the tone and adds aggression without the titanium price tag. You give up the weight savings and the exotic carbon tips, but you keep the factory active-valve behavior and gain a noticeably meaner note for a fraction of the cost.

Best Brake Upgrade: GiroDisc Rotors & EBC Bluestuff Pads

The best brake upgrade for the steel-rotor Giulia Quadrifoglio is a set of GiroDisc 2-piece slotted rotors paired with EBC Bluestuff track pads — the combination that stops fade without the carbon-ceramic price. Each GiroDisc rotor is 4.2 lbs lighter than the OEM disc it replaces, so a full front-and-rear set removes 16.8 lbs of rotating, unsprung mass. That directly quickens acceleration, steering response, and suspension reaction.

GiroDisc mounts a proprietary curved-vane cast-iron disc to a 6061-T6 aluminum hat using 12 high-strength alloy drive pins, letting the rotor float and self-center between the pads. The pins carry anti-noise spring washers so the disc can grow with heat while staying rattle-free, and the slots continuously refresh the pad surface and clear water film in the rain. Both the front ($1,283.25) and rear ($1,194.75) sets bolt directly to the factory calipers with no modification. Note the fitment: this set is for cars with OEM steel rotors, not the optional carbon-ceramic (CCM) package.

EBC Bluestuff NDX pads use an aramid-fiber compound rated from 100°C up to 750°C, giving strong cold bite for street driving plus the fade resistance for track days. They are a big step up from the softer OEM pads for anyone doing spirited canyon runs or HPDE laps. If you want a slightly more street-biased pad, the EBC Yellowstuff front set ($169.59) is the alternative — still track-capable but easier on rotor dust for a daily-driven Giulia QV.

Best Suspension: H&R Sport Springs vs ST Sport-Tech

The best value suspension upgrade for the Alfa Romeo Giulia Quadrifoglio is a set of lowering springs that keep the factory dampers and active suspension while cutting the fender gap. Our top pick is the H&R Sport Springs, which drop the QV 1.4 inches front and rear on a progressive rate that lowers the center of gravity and tightens body roll without wrecking ride quality.

The budget alternative is the ST Sport-Tech Lowering Springs ($399.00), engineered by KW from chrome-silicon steel for a roughly 1.0-inch drop front and rear. The ST set is the pick if you want a milder, more conservative stance and the lowest price, while the H&R set gives the more aggressive look and flatter cornering. Both retain the factory shocks and the QV's adaptive damping, and both are a straightforward spring swap for an experienced shop.

Fitment & Stance: Eibach Pro-Spacers

Once the QV is lowered, a set of Eibach Pro-Spacers pushes the wheels out to fill the fender and widen the track for sharper turn-in. These 16mm hubcentric spacers use the Giulia's 5x110 bolt pattern and 65mm center bore, so they locate precisely on the hub with no vibration and include extended wheel bolts. It is the cheapest upgrade here at $144.50, and it makes the biggest visual difference per dollar — the wheels finally sit flush with the arches instead of tucked inside them.

Every Giulia Quadrifoglio Upgrade Compared

Here is how the seven upgrades in this guide stack up by category, standout spec, and price. Click any part name or price to shop it directly at NLP Performance.

How to Prioritize Your Giulia QV Build

If you are building a Giulia Quadrifoglio in stages, start with the exhaust, then move to brakes, then suspension, and finish with fitment. That order gives you the biggest character change first, then the safety and track headroom, then the handling and stance. Sound is the reason most owners buy a QV, so the Akrapovic Evolution Line (or the value-priced Remus) is the emotional payoff that makes every drive better on day one.

Brakes come next because the factory steel setup is the first thing to fade if you take the car to a track day or a fast canyon road. GiroDisc 2-piece rotors shed 16.8 lbs of unsprung mass across all four corners and resist warping, while EBC Bluestuff pads hold their bite from a cold 100°C up to a track-hot 750°C. Suspension is the final handling piece: H&R or ST springs drop the center of gravity roughly an inch and a half and flatten body roll, and a 16mm Eibach Pro-Spacer at each corner squares the wheels to the fenders. Buy any of these individually or as a package — our team in Tampa, FL can confirm exact fitment for your specific 2017, 2018, or 2019 QV before you order.