Injen Service Kits

Injen Technology: A Legacy of Airflow Innovation

Injen Technology is one of the most recognized names in aftermarket performance parts, and for good reason. Founded in 1998, the brand grew directly out of its sister company, RD Metal Works — a precision manufacturer that had been designing and building air intake systems for major industry players since the mid-1990s. That deep manufacturing heritage, combined with an obsession for engineering refinement, gave Injen a running start that competitors simply could not match.

Absorbing the experience, design capabilities, and quality standards of RD Metal Works, Injen Technology was formed — embarking on a quest to brand their own name and set new standards of quality and performance. From that foundation, they went on to introduce a series of industry firsts that changed how enthusiasts think about engine breathing and performance tuning.

Patented Technology That Sets Injen Apart

What separates Injen from the crowded aftermarket field is a commitment to engineering that goes far beyond basic bolt-on parts. Injen utilizes a patented technology known as MR Technology, prioritizing drawing in cold, dense, oxygen-rich air that promotes a more efficient and powerful burn within the engine cylinders. This same philosophy extends to their filter technology: many Injen intakes are equipped with their SuperNano-Web air filter, which employs a fine, multi-layered synthetic nanofiber material that allows for exceptional airflow while simultaneously trapping even the smallest dirt and debris particles.

On top of filtration innovation, all Injen filters, molded couplers, and elbows are equipped with built-in velocity stacks, and mandrel-bent tubes are bent with larger radii for streamlined airflow — with each intake fitted to the correct tube size to minimize air restriction and maximize engine efficiency.

Made in the USA, Built for Performance

All Injen products are proudly made in the United States of America. In their California facility, they manufacture everything from intake and exhaust piping to filters, MAF housings, and more. This domestic production model gives Injen direct quality control over every component, ensuring consistency that enthusiasts and daily drivers alike can rely on.

Nearly three decades later — with several more patents developed and applied to several thousand new products — the Injen brand has become a household name among enthusiasts who demand high-quality, dyno-proven solutions for their vehicles.

The Injen Product Lineup

Injen's catalog centers on the engine air intake path, offering a full ecosystem of performance upgrades. Their flagship cold air intake systems relocate the filter away from engine heat for maximum charge density, while their short ram air intake options provide a more compact, underhood solution with minimal installation complexity. Supporting both are Injen's own performance air filters and purpose-built air filter wraps that protect against water and debris intrusion. For enthusiasts wanting to push performance further downstream, Injen launched their stainless steel cat-back exhaust systems to complement their air intake line, with each system featuring signature slanted mufflers and highly polished stainless steel construction. Browse their full lineup of exhaust system kits to complete the performance package from intake to tailpipe.