Tomei Exhaust System Kit

Tomei Expreme Ti: The Benchmark in Full Titanium Exhaust System Kits

When performance enthusiasts talk about complete exhaust system kits that genuinely move the needle on both weight reduction and sound quality, Tomei is consistently one of the first names mentioned. Rooted in motorsport since the 1960s and refined through decades of Japanese engineering, Tomei's exhaust system lineup — led by the legendary Expreme Ti series — represents everything an enthusiast could want from a full cat-back kit: all-titanium construction, purpose-built fitment, and a distinctive exhaust character that no generic stainless system can replicate.

What Sets the Tomei Expreme Ti Exhaust System Apart

The cornerstone of Tomei's exhaust system kit catalog is the Expreme Ti platform, available in several configurations including the Type-R (single-exit) and Type-D (dual-exit) variants. Every component in these kits is fabricated from premium-grade titanium, which delivers a meaningful reduction in unsprung and total vehicle weight compared to OEM steel systems. The design philosophy centers on keeping the exhaust path as straight as possible — using minimal bends and carefully optimized pipe diameters — to maximize exhaust gas velocity and power across the entire RPM range.

Tomei controls every step of their manufacturing process, from sourcing raw titanium to final assembly and quality inspection. This vertical integration means each kit ships with precision-welded flanges, proprietary clamp-band connections (which are significantly stronger and more heat-resistant than conventional flange-and-bolt designs), long-fiber glass wool packing proven to outlast traditional fiberglass at sustained high temperatures, and a punched-mesh inner silencer with a 32.6% open slot ratio engineered to balance flow with an unmistakable racing exhaust tone. Tail pipes are finished with the iconic EXPREME Ti laser-etched logo and a titanium heat-gradation blue coloring that is immediately recognizable in any build.

The silencer case in Expreme Ti kits uses an oversized shell design to further optimize exhaust gas flow and contribute to power gains, while the hook-and-spring connecting system holds sections together securely without the added weight of traditional flanges. Every kit is packaged as a true bolt-on system — springs, clamps, bands, and all necessary hardware are included so nothing else needs to be sourced separately.

Platform Coverage: Subaru, Nissan, Toyota, and Beyond

Tomei's exhaust system kits cover many of the most beloved Japanese performance platforms. Popular fitments include the Subaru WRX and WRX STI sedan lineup, the Subaru BRZ and Toyota GR86/86/FR-S twins, the Nissan 350Z and 370Z, and legendary Skyline GT-R models. This breadth of platform support, combined with model-specific engineering for each application, means these kits are not universal adapters — they are bespoke exhaust systems built to the exact dimensions and exhaust routing of each chassis.

Engineered for the Track, Built for the Street

Tomei designed the Expreme Ti exhaust system kit series with competition use as the baseline — then made it accessible enough for street builds and weekend track days. The result is a system that rewards drivers with improved throttle response, a broadened power band (especially when paired with appropriate tuning), and a dramatic reduction in exhaust system mass. For anyone serious about their Japanese performance build, a Tomei Expreme Ti exhaust system kit is one of the highest-value upgrades available.