Product Specifications
2008-2021 Subaru WRX Sedan 2.0L / 2.5L H4 Cat-Back Exhaust
This cat-back exhaust is built for 2008-2021 Subaru WRX 4-Door Sedan owners who want to replace the factory exhaust from the catalytic converter back without re-engineering the rest of the system. The system bolts directly to the OEM downpipe flange on both the 2.0L FA20 and the 2.5L EJ255 H4 Boxer engines, and it also fits the 2011-2021 WRX STI 4-Door Sedan. Installation stays at the factory mounting points, so the kit does not require an aftermarket downpipe, weld work, or an ECU re-flash.
The system is sold under one SKU (FLEXS22-00083SR-000-L) with two material variants. Pick SS201 stainless for budget builds or step up to SS304 stainless for marine-grade corrosion resistance in snow-belt or coastal climates.
Specifications
| Specification | Details |
|---|---|
| System type | Cat-back, single-exit |
| Pipe diameter | 3 in (76.2 mm) |
| Pipe bends | Mandrel-bent |
| Bend pipe material | 304 or 201 stainless steel, depending on variant |
| Bend pipe thickness | 1.23–1.25 mm |
| Inner perforated tube material | 409 stainless steel |
| Inner perforated tube thickness | 0.95–0.97 mm |
| Perforated tube end cap material | 304 stainless steel |
| Perforated tube end cap thickness | 0.87 mm |
| Flange material | 304 or 201 stainless steel, depending on variant |
| Flange thickness | 10 mm |
| Material variants | SS201 and SS304 |
Key Features
- System Coverage: Replaces the exhaust from the OEM catalytic converter outlet flange to the rear exit, while the catalytic converter, OEM downpipe, and O2 sensors stay in their stock positions.
- Mandrel-Bent 3" Tubing: True 3" (76.2 mm) piping with mandrel bends holds a consistent internal diameter through every curve, avoiding the flow restriction seen on crush-bent competitors.
- SS201 or SS304 Stainless Build: Two variants cover both budgets and climates: SS201 ($299.99) for standard builds, SS304 ($349.99) for marine-grade corrosion resistance in snow-belt or coastal use.
- Direct Bolt-On Mounting: Reuses the factory 3" downpipe flange and stock mounting points, so the install requires no cutting, no welding, and no aftermarket downpipe adapter.
- Integrated Resonator Tuning: The built-in resonator is tuned to keep cabin drone manageable at highway cruising speed while preserving the Boxer note on cold start and wide-open throttle.
- Hardware Kit Included: Gaskets, clamps, and mounting hardware ship in the box, so the install does not require a separate parts-store run.
What's Included
- 1 x Silencer Tail Pipe (pre-assembled resonator)
- 2 x Main Pipe A (front-to-mid and mid-to-rear sections)
- 1 x Gaskets / Clamps / Hardware Kit
- 1 x Installation Guide
Check Before Ordering
- Confirm your vehicle is a 2008-2021 Subaru WRX 4-Door Sedan (or 2011-2021 WRX STI 4-Door Sedan). Coupe, hatchback, and 2022+ WRX VB chassis vehicles require a different system.
- Confirm the engine is the 2.0L (FA20) or 2.5L (EJ255) H4 Boxer. Other Subaru trims (e.g., 2.4L FA24 in 2019+ Ascent / Outback) are not covered by this SKU.
- Confirm your existing exhaust uses the OEM-style 3" downpipe flange. Aftermarket test pipes with non-OEM flanges will require an adapter that is not included in this kit.
- Choose the right material variant before checkout: SS201 for budget builds, SS304 for snow-belt, coastal, or high-humidity climates.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
