Korsh Twin Scroll Down Pipe for Subaru STI JDM 2001-2007 Catless
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Description
Korsh Twin Scroll Down Pipe — 01–07 JDM STI (Catless)
Direct-fit catless twin scroll down pipe for the 2001–2007 JDM Subaru Impreza STI. Engineered to complement the factory twin scroll turbocharger setup, this down pipe removes the restriction of a catalytic converter entirely — ideal for track, motorsport, or off-road use where emissions compliance is not required.
Key Features
- Catless Design — No catalytic converter for maximum exhaust flow and minimal back pressure. Optimised for track and competition use.
- 304 Stainless Steel Construction — Full 304 stainless throughout for superior corrosion resistance and long-term durability under extreme heat cycles.
- Wax Cast Twin Scroll Head Flange — Precision wax cast flange ensures a perfect seal to the twin scroll turbine housing, eliminating leaks and maintaining spool characteristics.
- Bolt-On Fitment — Direct replacement for 01–07 JDM STI. No cutting, drilling, or fabrication required.
Note: This catless down pipe is intended for off-road/motorsport use only. It is not road legal in all jurisdictions. Please check local regulations before purchase.
Specifications
| Application | 2001–2007 JDM Subaru Impreza STI |
| Catalytic Converter | None (Catless) |
| Material | 304 Stainless Steel |
| Flange Type | Wax Cast Twin Scroll Head Flange |
| Fitment | Bolt-On Direct Replacement |
| Vendor | Korsh |
Please contact us for lead time and availability. For fitment queries, reach out via the iilumolab website at iilumolab.com.au.
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.