ARMS M7960 Turbocharger

The Tomei ARMS M7960 is a performance turbocharger engineered to exceed the capabilities of the stock unit on Mitsubishi Evolution 4 through 9 models, including RS, GSR, SE, and MR configurations. By optimizing the balance between the turbine and compressor wheels, this unit increases peak power—capable of supporting over 400 HP—while maintaining smooth boost delivery and stock-like response characteristics. Technically, the kit provides consistent boost pressure well into the high RPM range, where the original turbocharger typically falls off. It is available in both journal bearing (MX7960) and ball bearing (BX7960) configurations. The assembly includes all necessary hardware for a true bolt-on installation, such as Evo 9-style oil and water lines, a matching j-pipe, gaskets, and banjo bolts, allowing for immediate integration without sourcing additional parts. Tomei offers a 1-year limited warranty on the turbine kits, provided the product is registered after purchase. All components for general maintenance, rebuilds, and overhauls are maintained in stock by the manufacturer to support the turbocharger through extensive use.