A’PEXi Gaskets and Sealing Systems

A'PEXi: Three Decades of Japanese Performance Engineering

A'PEXi was founded in Nagoya, Japan in 1992, launching from a team of the country's leading engineers and mechanics with a singular focus: developing top-quality aftermarket performance parts for enthusiasts who demand more from their vehicles. What began as a small tuning parts manufacturer has grown into a multi-industry international powerhouse with a presence spanning exhaust systems, engine electronics, suspension, and beyond.

A'PEXi's reputation was built on real-world racing experience. In 1998, the company's motorsport division — abbreviated "apr" for Apex Racing — entered the prestigious SUPER GT series campaigning a Toyota MR2, winning their class the very next season. That same commitment to proving parts on the track before bringing them to the street has defined A'PEXi's engineering philosophy ever since, with involvement in D1 drifting, drag racing, and endurance competition all feeding back into their consumer product development.

Iconic Products That Defined an Era

Perhaps no product better illustrates A'PEXi's influence on the import tuning world than the N1 Muffler. Born from the brand's involvement in the grueling N1 endurance race series, it was among the first mufflers to combine a classic angled design with a straight-through, free-flowing layout optimized for performance. The N1 concept evolved into a full family of exhaust system kits — including the N1 Evolution, N1 Evo-R, N1-X Evolution Extreme, RS Evolution, and World Sport II lines — each constructed from high-grade SUS304 stainless steel with robotic TIG welding for lasting durability. Today, the N1 series covers an enormous range of Japanese sport compacts and performance vehicles, from classic Nissan S-chassis and Mazda RX-7s to modern Honda Civics, Subaru WRX/STIs, and Toyota GR86/BRZ platforms.

On the electronics side, A'PEXi made history with the Power FC engine control module — one of the first standalone ECUs capable of fully replacing the factory unit without relying on the OEM system as a backbone. The Power FC offers tuners direct control over fuel mapping, ignition timing, and other critical engine parameters, and has become a cornerstone tool in the import performance community. A'PEXi's electronics lineup has since expanded to include the AFC Neo fuel controller, AVC-R boost controller, and a range of precision gauges and meters.

A'PEXi's commitment to complete vehicle performance extends to chassis dynamics as well. Their N1 coilover spring and shock assemblies — including the N1 Evolution Damper and the N1 ExV Damper — bring the same race-derived engineering to suspension tuning. The ExV platform features a fully threaded body for precise ride height adjustment, 32-way damping adjustment, and valving refined specifically for the demands of U.S. road conditions, making it equally at home on the daily commute or the weekend track day.

A Legacy Built on Engineering and Community

Throughout its history, A'PEXi has remained closely connected to the tuning community, using an international network of shops and enthusiasts as a continuous feedback loop to guide product development. Whether you are chasing tenths on a circuit or building the ultimate street machine, A'PEXi offers a proven lineup of parts refined across more than 30 years of real-world performance development.