Tomei EXPREME Ti Titanium Muffler
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Tomei full titanium competition muffler for the Subaru Impreza WRX STI GDB (USDM 02-07). Racing-straight layout with minimal bends maximises exhaust efficiency. Three-section slip-joint construction with spring and clamp band connections eliminates mid-pipe flanges for further weight savings. Φ80mm main pipe with Φ152mm silencer and Φ115mm titanium blue-tipped exit with laser-engraved Tomei logo. Includes sound reducer insert. 10.4kg lighter than factory at just 5.1kg. Includes sound reducer insert. Competition use only — not street legal.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | Impreza WRX STI | GDB (USDM 02-07) | EJ207 / EJ205 / EJ257 |
Technical Specifications
| Specification | Tomei | Stock |
|---|---|---|
| Part Number | 440006 | – |
| Material | Titanium | Iron |
| Main Pipe Diameter | Φ80.0mm | Φ60.5mm |
| Main Pipe Thickness | 1.0mm | 1.5mm |
| Exit Diameter | Φ115mm | Φ100mm |
| Flange Thickness | 2.0mm | 2.5mm |
| Weight | 5.1kg | 15.5kg |
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