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GReddy: Decades of Japanese Performance Engineering

GReddy, officially known as GReddy Performance Products (GPP), has been one of the most recognized names in the Japanese performance aftermarket since its U.S. operations launched in Irvine, California in 1994. Rooted in the legacy of Japan's Trust Co., Ltd. — founded in 1977 in Japan, Trust manufactures all of its products at its factory in Chiba, Tokyo — GReddy carries decades of motorsport-derived engineering directly into enthusiast hands. Whether you're building a dedicated track machine or refining a street-inspired Japanese import, GReddy's catalog addresses virtually every dimension of performance.

A Complete Performance Ecosystem

What sets GReddy apart from many aftermarket brands is the sheer breadth of its lineup. GReddy's product range spans exhaust systems, air intake, turbocharger kits, blow-off valves, wastegates, intercooler kits, oil coolers, radiators, engine and drivetrain components, performance plumbing, electronics, aerodynamics, and chassis upgrades. This end-to-end approach means enthusiasts can source complementary, engineered-to-work-together components from a single trusted manufacturer rather than mixing and matching from different brands.

For those focused on forced induction, GReddy's turbocharger kits are a flagship offering, purpose-built to dramatically increase power output on compatible Japanese platforms. Pairing naturally with the turbo lineup are GReddy's intercooler kits, which represent one of the best ways to safely increase horsepower in a turbocharged engine by reducing inlet temperatures so a denser air charge enters the engine — producing more power at the same boost level and even greater gains at higher boost levels.

On the intake side, GReddy's renowned Airinx line makes up the core of their air filter offerings. GReddy Airinx and GReddy Air Intake Systems are designed to provide an easy and simple solution for helping increase air intake flow to a vehicle's engine. The range spans both universal fitments and application-specific drop-in replacements, all featuring a dry filter element to protect sensitive OEM intake sensors.

GReddy's exhaust mufflers are equally well-regarded. Each GReddy exhaust line may vary in muffler and tip style, material construction, and application usage, but all feature GReddy's commitment to performance, sound, and quality. Lines like the GPP RS Titanium and JDM Spec Exhaust reflect the brand's dual focus on race-proven engineering and refined street aesthetics.

Aerodynamics: The GRacer & Pandem Legacy

GReddy's influence extends well beyond the engine bay. Their ground effects kits — marketed under the GRacer and Rocket Bunny/Pandem sub-brands — have become some of the most sought-after aero packages in the Japanese tuning world. GPP won the 2007 Best Japanese Import – GT Award at the SEMA Show with a full aero kit on their twin-turbo 350Z HR demo car, a testament to the real-world impact of their aerodynamic designs. These kits typically include front bumpers, side over-fenders, side skirts, and rear diffuser bumpers crafted in FRP fiberglass.

Built for Enthusiasts, Trusted by Racers

GReddy's product focus has long centered on Toyota, Nissan, Honda, Subaru, Mitsubishi, and Mazda platforms — the backbone of the Japanese performance scene. Application coverage spans Toyota, Lexus, Nissan, Mazda, Honda, Subaru, Mitsubishi, and Suzuki vehicles. From weekend autocross competitors to dedicated time-attack builds, GReddy remains a go-to source for enthusiasts who demand engineering integrity alongside unmistakable style.