HKS Supercharger Kit

HKS GT Supercharger Kits: Precision Forced Induction from a Japanese Performance Pioneer

HKS has built its reputation over decades as one of the most respected names in Japanese performance engineering, and nowhere is that expertise more clearly on display than in its lineup of supercharger kits. Rather than simply adapting an off-the-shelf blower to fit various vehicles, HKS engineered its own centrifugal supercharger platform from the ground up — one designed specifically to overcome the drawbacks that have historically limited forced induction upgrades.

The GT Supercharger Platform: Engineering Behind the Boost

At the core of every HKS supercharger kit is the proprietary Torque Response Traction Drive System. The HKS GT Supercharger employs this unique system to deliver unparalleled efficiency, making the unit compact and more durable even under high load. Compared to conventional positive-displacement superchargers, the centrifugal design offers higher compression efficiency, while the Torque Response Traction Drive further improves transfer efficiency and reduces friction versus conventional centrifugal designs.

Noise has always been a traditional weakness of supercharger systems, but HKS addressed this head-on. The centrifugal compressor eliminates pulsation noise from discharged air, the traction drive produces no gear noise, and a "No Backlash System" in the transmission eliminates noise under input torque fluctuation. At low load, the pushing force is proportionally reduced, resulting in better fuel efficiency compared to other traction drive supercharger designs.

GT2 Supercharger: The Next Generation

The original HKS GT Supercharger — already a lightweight and compact centrifugal unit — has been redesigned as the GT2 Supercharger, offering enhanced durability and improved quality with upgraded components in the 7040 series. The flagship GT2-7040L is at the heart of HKS's most current vehicle-specific kits.

Designed specifically for the FA24 2.4L engine in the GR86 and BRZ, the GT2 Supercharger Pro Kit delivers substantial power and torque gains while maintaining a clean, bolt-on installation. Its GT2-7040L centrifugal supercharger provides smooth, responsive boost across the RPM range for noticeable midrange and top-end power gains. The complete kit includes the supercharger unit, front-mount intercooler, all brackets, piping, and necessary traction and oiling components for a full installation.

Vehicle-Specific and Universal Kit Options

HKS offers its supercharger technology in two formats to serve a wide range of enthusiasts. The GT Supercharger Vehicle-Specific Kit includes the supercharger unit, brackets, piping, intercooler, traction oil, and all other components required for installation on a specific vehicle. For builds that fall outside a vehicle-specific application, a Universal Kit is available that includes the main GT Supercharger unit and traction oil-related parts, intended for vehicles not covered by a vehicle-specific kit.

The iterative refinement of HKS kits is also worth noting. The GT Supercharger V3 for the FA20-powered 86/BRZ/FR-S lineup, for example, saw meaningful improvements over its predecessors: a revised inlet pipe with a larger inside diameter, removal of the restrictor plate, and a larger supercharger pulley, all of which optimize airflow into the supercharger for a slower-spinning but more efficient delivery of boost.

Broad Platform Support

HKS supercharger kits span a notable range of popular sport compact platforms. Beyond the Toyota GR86 and Subaru BRZ, the GT2 lineup has been developed for vehicles including the Mazda MX-5 and Honda S2000. On the S2000, the HKS kit provides consistent horsepower and torque gains throughout the powerband — most impressively in the midrange, which is historically a weak point for that engine. At the heart of the MX-5 system is a high-efficiency centrifugal rotor assembly with an intercooler for lower inlet air temperatures, assisted by an air intake box that further shields heat and reduces intake noise.

Whether you're building a spirited street machine or a track-focused weapon, HKS supercharger kits represent one of the most thoroughly engineered bolt-on power solutions available for sport compact platforms. Explore the full HKS brand catalog or browse all supercharger kits to find the right system for your application.