Best Superchargers for S550 Mustang GT (2015-2020)

A supercharger is the single biggest power adder you can bolt to an S550 Mustang GT, and the right one turns a 435-460 hp street car into a 600-to-800 hp monster on pump gas. At NLP Performance in Tampa, FL, the question we field most from Coyote owners is simple: which S550 Mustang GT supercharger actually fits my year, and how much power will it make? This guide rounds up the five Eaton TVS positive-displacement kits we stock from Edelbrock and Roush for 2015-2020 GTs, with real dyno figures, part numbers, fitment, and pricing so you can order the correct system the first time.

How much power does a supercharger add to a Mustang GT?

A supercharger adds 150 to 300+ horsepower to an S550 Mustang GT, taking a stock 5.0L Coyote from its factory 435-460 hp to anywhere between 623 and 800 crank horsepower depending on the kit and boost level. All five systems in this guide use an Eaton Twin Vortices Series (TVS) roots-style blower that spins off the crank via a belt, packing more air into the engine the instant you touch the throttle. Unlike a turbo, there is no spool — boost is instant, and the power curve is fat and flat from just off idle.

Two rotor sizes cover the field: Edelbrock's kits run Eaton's biggest TVS R2650 (2.65-liter) rotor pack with an integrated dual-pass, three-core (DP3C) air-to-water intercooler, while Roush's Phase 2 uses the proven TVS R2300 (2.3-liter) unit. Bigger displacement moves more air at a given boost pressure, which is why the R2650 Edelbrock kits headline this list. Whichever you choose, the intercooler is what keeps intake air temperatures — and detonation — in check so the tune can chase real power safely.

All five kits are positive-displacement (roots-style) blowers rather than centrifugal units, which is why they build full boost almost instantly instead of only near redline. Expect roughly 8 to 12 psi depending on the pulley and calibration, and plan on 91-93 octane at minimum — the more boost you run, the more the tune leans on good fuel and that air-to-water intercooler to stay out of knock. That instant, tractable torque is exactly what makes a blown Coyote so easy to live with as a daily driver.

The best S550 Mustang GT superchargers, ranked

Here are the five S550 supercharger kits we stock, grouped by the two Coyote generations. Confirm your engine before you buy: 2015-2017 cars use the “modular nose” port-injected Coyote, and 2018-2020 cars use the Gen 3 direct-injected-plus-port (DI/PI) engine. A kit built for one will not bolt to the other.

1. Edelbrock Stage II R2650 — Best Overall (2018-2020 GT)

This is Edelbrock's highest-output, 50-state-emissions-legal supercharger for the Gen 3 Coyote and our top pick for 18-20 cars. It builds on the same R2650 TVS blower and DP3C air-to-water intercooler as the street kit but adds 170-degree high-twist lobes, bigger bearings, and beefier timing gears to support serious boost.

2. Edelbrock E-Force Stage 1 Street Kit — Best 623 rwhp Value (2018-2020 GT)

Want big, reliable, warranty-friendly power without going all the way to Stage II? The Stage 1 street kit is dyno-proven to make 623 horsepower and 510 lb-ft of torque to the rear wheels on a 2018-2020 GT with no other engine modifications. Same R2650 blower and DP3C intercooler, tuned for daily-driver manners and pump gas.

3. Edelbrock E-Force Pro Tuner Competition Kit — Highest Ceiling (2015-2019)

Building a stroker or chasing a dyno number? The Pro Tuner system is Edelbrock's competition kit for 2015-2019 GT, GT350 and Bullitt cars. It uses a modular supercharger inlet that accepts larger throttle bodies, plus a high-flow Competition Air Intake with a 113mm MAF housing and a 6-rib belt drive. It ships without a calibration — you supply the custom tune — which is exactly why built engines gravitate to it.

4. Roush Phase 2 R2300 — Best Turn-Key Kit (2015-2017 GT)

Roush's Phase 2 system is the enthusiast favorite for 2015-2017 cars because it ships as a calibrated, turn-key package. Roush rates it at 727 horsepower (roughly 600 to the wheels) using an Eaton TVS R2300 blower, and it carries Roush's 3-year / 36,000-mile powertrain warranty when installed by an authorized dealer. It is one of the few supercharger kits here that arrives with the tune already dialed in.

5. Edelbrock Stage 1 Modular-Nose Kit — 690 hp for 2015-2017 GT

The R2650 answer for early S550 cars. Edelbrock's modular-inlet Stage 1 kit produces 690 horsepower and 588 lb-ft of torque on a 2015-2017 GT, pairing the big 2.65L TVS blower with the same DP3C air-to-water intercooler as the newer kits. If you want the largest rotor pack on a pre-2018 Coyote, this is it.

Supercharger comparison: TVS R2650 vs R2300

Here is the whole field side by side. Match the fitment column to your model year first, then weigh power, hardware, and price. Tap any kit to confirm fitment and check live pricing.

Which Mustang GT supercharger should you buy?

Start with your model year. On a 2018-2020 GT, the Edelbrock Stage 1 street kit at around $9,000 delivers a dyno-proven 623 rwhp with true daily-driver reliability, and the Stage II is the move if you want Edelbrock's biggest 50-state-legal number. On a 2015-2017 GT, the Roush Phase 2 wins for anyone who wants a calibrated, warranty-backed 727 hp turn-key install, while the Edelbrock modular-nose Stage 1 gives you the larger 2.65L rotor and 690 hp. Building an engine or going for a big dyno figure on either generation? The Pro Tuner competition kit is the blank canvas.

Budget for the supporting cast, not just the blower. Plan on a professional installation (typically 8-12 hours of labor), a custom or included calibration, high-flow injectors and a boost-a-pump or return-style fuel setup at the upper power levels, and 91-93 octane minimum. At NLP Performance in our Tampa, FL shop, we tell customers to pair boost with the basics: a free-flowing cat-back exhaust to let the blower breathe, and upgraded S550 big brakes so the car stops as hard as it now accelerates.

Driving a newer 2024-2026 S650 Mustang GT or Dark Horse instead? Those cars use a different Coyote again, so a S550 kit will not fit — Roush offers a dedicated 810 hp S650 supercharger kit engineered for that platform. The rule never changes: buy the system built for your exact model year.