Best Superchargers for 2024-2026 Mustang GT & Dark Horse

A supercharger is a belt-driven forced-induction system that pressurizes the intake charge to make big, reliable power – and on the 2024-2026 Ford Mustang GT and Dark Horse (the S650 chassis, 5.0L Coyote V8), the best supercharger kits transform a 480-500 HP muscle car into an 810 HP street monster. The three kits worth your money right now are the Ford Performance M-6066-M8800 (a factory-warrantied 3.0L Whipple system), the Roush Phase 2 (Eaton TVS R2650, 810 HP), and the Roush Phase 1 (740 HP on the same blower). All three bolt to the stock Coyote and put GTD-level power in reach for around $10,000.

Why Supercharge a 2024-2026 Mustang GT or Dark Horse?

Supercharging is the single biggest power-per-dollar upgrade for the S650 Mustang. From the factory, the 2024-2026 Mustang GT makes 480 HP (486 HP with the active-valve exhaust) and 415 lb-ft from its 5.0L Coyote V8, while the track-focused Dark Horse bumps that to 500 HP and 418 lb-ft with strengthened internals and a Tremec 3160 six-speed manual option. Bolt on one of the supercharger kits below and that same engine makes 740 to 810 HP – a 260 to 330 HP gain over stock.

For perspective, the $325,000-plus, supercharged 5.2L Mustang GTD is rated at roughly 815 HP. These kits put a Coyote-powered GT within a whisker of GTD output for about 3% of the cost. That is why forced induction – not headers, not a cam swap – is where serious S650 builds start. At our Tampa, FL shop, a supercharger is the first question we get from Dark Horse owners who have already added an exhaust and want a genuine step-change in acceleration.

The 3 Best Superchargers for the S650 Mustang (5.0L Coyote)

Every kit below is engineered specifically for the 2024-2026 Coyote and fits under the factory hood and strut-tower brace with no cutting. The difference comes down to blower design (twin-screw versus roots-type TVS), peak output, emissions certification, and warranty. Here is how the three stack up.

1. Ford Performance M-6066-M8800 – Best Overall (810 HP, Factory Warranty)

The Ford Performance kit is the factory-blessed answer. Developed by Whipple Superchargers in partnership with Ford Performance Engineering, it uses a Gen-6 3.0L inverted twin-screw supercharger, a patented dual-pass intercooler, a 92mm throttle body, colder spark plugs, and GT500 port-fuel injectors. On active-exhaust cars it delivers 810 HP at 7,500 RPM and 615 lb-ft at 4,800 RPM (about 800 HP on non-active-exhaust models). The calibration is loaded with the included Tomahawk tool, and Ford recommends 91-plus octane.

Its standout feature is the 3-year/36,000-mile warranty from the vehicle's in-service date – valid when the kit is installed by a Ford dealer or ASE-certified technician and registered through the Ford Performance Tech-line. No other kit here protects your factory powertrain investment like that. The trade-off: it is emissions-legal in 49 states only (not California), and it is the priciest of the three at $10,500.

2. Roush Phase 2 (422337) – Best 50-State 810 HP Kit

Roush's Phase 2 kit matches the Ford unit's 810 HP and actually edges it on torque at 630 lb-ft, all for $505 less. The heart of the system is an Eaton-sourced TVS R2650 (2.65-liter) roots-type supercharger with a dual throttle body, front inlet, front drive, dual-intercooled design, and an 84mm pulley that peaks around 13 PSI at 7,500 RPM. Roush claims up to 34% more throttle area than competing kits, and the package includes high-flow injectors, billet fuel rails, and a Roush ECU calibration.

The biggest advantage over the Ford kit is emissions: the Phase 2 carries CARB Executive Order D-488-65, making it legal in all 50 states including California. If you register your Mustang in a CARB state, this is the 810 HP kit to buy. Note that it ships in limited quantities, so availability moves fast.

3. Roush Phase 1 (422338) – Best Value / Street Driver (740 HP)

The Phase 1 kit uses the exact same Eaton TVS R2650 hardware as the Phase 2 but runs a milder, street-oriented Roush calibration for 740 HP and 600 lb-ft – still a 240-plus HP jump over a stock GT. It is the smart pick if you want reliable daily-driver manners, a little more thermal headroom, and a clear upgrade path (Phase 1 hardware can be recalibrated toward Phase 2 output later). Like the Phase 2, it carries CARB EO D-488-65 for 50-state legality and includes Roush Diagnostic Tuning calibration.

Twin-Screw vs Roots (TVS): Which Supercharger Design Wins?

The core hardware difference between these kits is blower type. The Ford Performance kit uses a Whipple twin-screw (positive displacement with two intermeshing rotors that compress air internally), while both Roush kits use an Eaton TVS R2650 roots-style unit (a high-helix twin-vortices design that moves air into the manifold where it is compressed). Both are positive-displacement blowers that build boost instantly off idle – there is no turbo lag with either.

Twin-screw blowers like the Whipple are generally the more thermally efficient of the two, producing slightly cooler charge temps for a given boost level, which is why the Ford kit hits 810 HP with a 3.0L unit. Roots-style TVS blowers are prized for their broad, flat torque curve, compact packaging under the S650 hood, and proven reliability – the R2650 makes an identical 810 HP in Phase 2 trim. For 99% of street and strip drivers, the real deciding factors are warranty (Ford) versus 50-state emissions legality (Roush), not the last few horsepower.

Install, Fuel & Supporting Mods for a Supercharged S650

A supercharger is only as good as its supporting cast. All three kits are complete, calibration-included systems that bolt to the stock long-block, but there are a few realities every S650 owner should plan for before making 740-810 HP.

Fuel and octane

All three kits are calibrated for 91-plus octane premium pump gas. The included GT500 or high-flow injectors and billet fuel rails handle the added fuel demand, so you do not need a separate return-fuel-system upgrade for these power levels. Never run a supercharged Coyote on 87 octane.

Installation time

Plan on roughly 8 to 12 hours of professional install labor. The job involves removing the intake manifold, fitting the blower and intercooler, wiring, and flashing the calibration. Ford's warranty specifically requires a Ford dealer or ASE-certified technician, so this is not the upgrade to rush in a driveway if you want the coverage intact.

Drivetrain and traction

At 740-810 HP, the factory Michelin Pilot Sport tires and stock clutch on the manual Dark Horse become the limiting factor long before the engine does. Budget for sticky drag radials or a set of 305-wide performance tires, and consider a heavier-duty clutch if you plan to launch hard. The 10R80 automatic handles the torque well, but half-shaft and driveshaft upgrades are common on cars that see the track.