Next Level Performance
August 4, 2026 • 11 min read
The 2025 BMW M5 (G90) is the first plug-in hybrid M5 — a 717-horsepower, all-wheel-drive super sedan that pairs BMW M's twin-turbo 4.4L V8 with an electric motor, and it arrives with a body style the U.S. has never officially received: the G99 M5 Touring wagon. It is the most powerful and, at 5,390 lb, the heaviest M5 ever built. That combination of enormous output and serious mass is exactly why the first wave of aftermarket parts for the G90 is arriving fast — and why suspension, not just exhaust, is where most owners are starting. Below we break down the numbers on the new car and the first bolt-on upgrades now in stock at NLP Performance, headlined by the KW V4 coilover kit.
Our Verdict
Start with suspension: the KW V4 coilover kit is the highest-impact first mod for the 5,390 lb G90 M5.
The new hybrid M5 makes 717 hp and 738 lb-ft, but its curb weight is up roughly 1,000 lb over the outgoing F90. The KW V4's independent high/low-speed compression and rebound adjustment lets you dial out that mass, sharpen turn-in, and set your own ride height. Pair it with an Akrapovic titanium cat-back for sound and weight, and you have the two upgrades that most change how the G90 drives.
Shop Our Top Pick →What Makes the 2025 BMW M5 (G90) Different?
The 2025 BMW M5 (G90) is a plug-in hybrid super sedan that produces a combined 717 horsepower and 738 lb-ft of torque. Its S68 4.4-liter twin-turbo V8 makes up to 577 hp on its own, and an electric motor integrated with the 8-speed M Steptronic transmission adds up to 194 hp, feeding all four wheels through M xDrive. BMW quotes 0–60 mph in 3.5 seconds and a top speed of 190 mph with the M Driver's Package. Pricing starts near $119,500 for the sedan.
The headline change is mass. The plug-in hybrid battery and hardware push curb weight to 5,390 lb (2,435 kg) — roughly 1,000 lb heavier than the 2018–2023 F90 M5 and more than many full-size SUVs. The upside is that the G90 can run on electric power alone for short trips, then deploy a torque figure no previous M5 has matched. The other landmark is the G99 M5 Touring: BMW is bringing a factory M5 wagon to the United States for the first time, sharing the same 717-hp powertrain as the sedan.
For enthusiasts, that changes the tuning conversation. On the lighter F90, exhaust and a tune were the classic first moves. On the 5,390-lb G90, controlling body motion and managing that weight is job one — which is why coilovers and lowering springs are leading the early aftermarket, alongside the usual titanium exhaust and carbon-fiber styling parts.
2025 BMW M5 (G90) By The Numbers
Why the G90 M5 Needs Suspension First
Suspension is the highest-value first upgrade for the G90 M5 because the car's 5,390-lb curb weight is the single biggest change from the previous generation. More mass means more load transfer, more body roll, and more work for the dampers to keep the tires planted. A quality coilover kit adds compression and rebound control the factory adaptive dampers do not offer, and it lowers the center of gravity for flatter cornering.
The KW V4 coilover kit is the flagship option and our top pick at $8,944. KW's V4 platform is its most adjustable street-and-track system: it offers independently adjustable low-speed and high-speed compression damping plus separate rebound adjustment, so you can tune body control and impact harshness separately. Ride height is adjustable via the threaded stainless-steel (inox-line) struts, which resist corrosion for year-round use. For a 700-plus-horsepower sedan that owners will drive on the street and the track, that range of adjustment is exactly what the extra mass demands.
KW V4: independent high/low-speed compression plus rebound adjustment.
What We Like
- + 4-way adjustable: independent low/high-speed compression and rebound
- + Fully height-adjustable to erase fender gap on the heavy G90
- + Stainless inox-line hardware built for year-round street use
Things to Consider
- – Premium price — the most expensive first mod on this list
- – Needs a proper corner-balance and alignment to realize its potential
The complete KW V4 kit fits the G90 sedan and G99 Touring.
First Exhaust Upgrades for the G90 M5
The best first exhaust upgrade for the G90 M5 is a titanium cat-back that trims weight and wakes up the S68 V8's voice without triggering fault codes. The Akrapovic Evolution Line cat-back ($8,336.88) is the benchmark: it is built entirely from lightweight titanium — the lightest exhaust material Akrapovic uses — and is engineered to reduce back pressure and deepen the exhaust note while the factory sound valves keep drone in check. The system is designed to run with a dedicated tailpipe set, so most builds add the matching Akrapovic round carbon-fiber tips.
Matching Akrapovic round carbon-fiber tailpipe set ($2,253.90).
If you want a sportier sound at a lower price point, the Remus axle-back exhaust ($3,294.32, down from $3,722.40) is a valved bolt-on that installs behind the mufflers without touching the mid-pipe. It is a simpler swap than a full cat-back, fits both the G90 sedan and G99 Touring, and retains the factory active-valve behavior for quiet cold starts. For owners who want more volume than stock but are not ready to spend cat-back money, it is the value pick.
Remus valved axle-back: a bolt-on sound upgrade for the G90/G99.
Full-titanium construction is central to Akrapovic's weight savings.
Lowering Springs vs Coilovers on the New M5
Lowering springs are the budget path to a better stance and a lower center of gravity, while coilovers add ride-height and damping adjustability at a higher price. On the G90, springs reuse the factory adaptive dampers and simply lower the car, whereas the KW V4 replaces the dampers entirely. If you are chasing looks and a modest handling gain, springs are the smart entry point; if you want full control and track capability on a 5,390-lb car, coilovers are worth the step up.
The H&R VTF adjustable lowering springs ($1,665.00, from $1,850.00) are the standout spring option because they are height-adjustable within a range — roughly 1.0–1.6 in of front drop and 0.6–1.2 in at the rear — so you can fine-tune the stance while keeping the OE electronic dampers. The AST adjustable lowering springs ($1,309.80, from $1,480.00) offer a similar adjustable-drop concept at a lower price, and both fit the G90 sedan.
AST adjustable lowering springs ($1,309.80): the value stance option.
| Kit | Category | What It Does | Price |
|---|---|---|---|
| KW V4 Coilover KitTop Pick | Suspension | Height + 4-way damping control | $8,944.00 |
| Akrapovic Evolution Cat-Back | Exhaust | Full-titanium weight loss + V8 sound | $8,336.88 |
| Akrapovic Carbon Diffuser | Exterior | High-gloss dry-carbon rear styling | $3,934.48 |
| Remus Axle-Back Exhaust | Exhaust | Valved bolt-on sound upgrade | $3,350.16 |
| H&R VTF Springs | Suspension | Adjustable drop, keeps OE dampers | $1,665.00 |
Carbon Fiber and Styling: Akrapovic Rear Diffuser
The most popular styling upgrade for the G90 M5 is a carbon-fiber rear diffuser, which sharpens the back end and pairs naturally with an upgraded exhaust. The Akrapovic high-gloss rear carbon diffuser ($3,934.48) is made from genuine carbon fiber with the same finish quality as Akrapovic's exhaust tailpipes, so it matches the Evolution Line and round carbon tip set for a cohesive look. Because it is a direct-fit replacement for the OE diffuser, it installs without cutting or bodywork.
Owners chasing a full carbon rear treatment usually add the Akrapovic round carbon-fiber tailpipe set ($2,253.90), the intended finisher for the Evolution Line cat-back. Together, the diffuser and tips give the hybrid M5 the visual aggression its 717-hp output deserves — and every part on this page is a genuine, brand-engineered piece, not a universal knockoff.
How to Choose Your First G90 M5 Upgrade
Choose your first G90 M5 upgrade based on the single trait you most want to change: handling, sound, or looks. For handling, start with the KW V4 coilover or H&R VTF springs to counter the car's weight. For sound and a small weight save, go to the Akrapovic Evolution Line titanium cat-back or the value-priced Remus axle-back. For appearance, the Akrapovic carbon diffuser and tailpipe set deliver the biggest visual change per dollar.
In our Tampa, FL shop, we tell new M5 owners the same thing: on a 5,390-lb car, the mods that control mass pay off first. A set of coilovers or adjustable springs changes how the G90 feels in every corner, every day — more than an exhaust ever will. Exhaust and carbon come next, once the chassis is sorted. Because the G90 sedan and G99 Touring share the same platform, the KW V4, Akrapovic Evolution Line, and adjustable springs fit both, so wagon owners are not left out of the early parts wave. Browse the full lineup in our coilovers collection and exhaust collection.
Frequently Asked Questions
How much horsepower does the 2025 BMW M5 (G90) make?
The 2025 BMW M5 (G90) makes a combined 717 horsepower and 738 lb-ft of torque from its plug-in hybrid powertrain. The S68 4.4L twin-turbo V8 contributes up to 577 hp and the electric motor adds up to 194 hp, driving all four wheels through M xDrive. BMW rates 0–60 mph at 3.5 seconds.
Why is the G90 M5 so much heavier than the F90?
The G90 M5 weighs about 5,390 lb because of its plug-in hybrid battery and electric-drive hardware, roughly 1,000 lb more than the 2018–2023 F90 M5. That added mass is the main reason suspension upgrades — coilovers or adjustable lowering springs — are the most popular first modification for the new car.
What is the best first modification for the G90 M5?
The best first modification for the G90 M5 is a coilover kit such as the KW V4 ($8,944), because it directly addresses the car's 5,390-lb weight with adjustable ride height and 4-way damping control. It improves body control and stance more than any exhaust or styling part, making it the highest-impact starting point.
Do G90 M5 parts fit the G99 M5 Touring wagon?
Yes — most G90 sedan parts fit the G99 M5 Touring because they share the same platform and 717-hp powertrain. The KW V4 coilover, Akrapovic Evolution Line cat-back, Akrapovic carbon tailpipe set, and Remus axle-back are all listed for both the G90 sedan and G99 Touring.
Coilovers or lowering springs for the 2025 M5?
Choose coilovers for full ride-height and damping adjustability, or lowering springs for a simpler, lower-cost drop that reuses the factory adaptive dampers. The KW V4 coilover ($8,944) suits track-focused owners, while H&R VTF adjustable springs ($1,665) deliver a tunable street stance at a lower price.
Does an Akrapovic exhaust add power to the G90 M5?
An Akrapovic Evolution Line titanium cat-back is built to reduce exhaust back pressure and cut weight versus the OE system, which can free small gains and a deeper V8 note. The larger benefits on the G90 are weight savings from full-titanium construction and a richer sound, rather than big peak-power numbers.
Build the New M5 Your Way
Shop KW, Akrapovic, H&R and more for the 2025 BMW M5 (G90 & G99) at NLP Performance.
Shop the CollectionFree shipping on select brands • Located in Tampa, FL