Product Specifications
Catless Downpipes for 2000–2002 Audi S4 B5 and 2001–2005 Allroad C5 2.7L Bi-Turbo
These FLASHARK stainless steel downpipes replace the factory downpipe sections on the listed Audi S4 B5 and Allroad C5 2.7L bi-turbo applications. The paired, catless layout uses mandrel-bent tubing, TIG-welded joints and a tapered connection. Check your vehicle, turbo outlets and downstream exhaust connections before ordering.
Specifications
| Specification | Details |
|---|---|
| Brand / model | FLASHARK / DP29739 |
| Part type | Catless exhaust downpipes |
| Material / finish | T-304 stainless steel / mirror polish |
| Construction | 16-gauge (1.5 mm) tubing, mandrel bends, TIG-welded joints and CNC-machined flanges |
| Listed diameter | 3 in (76 mm) tapering to 2.5 in (64 mm); 2.25 in outlet is also listed—verify the mating connection |
| Listed turbo compatibility | K03 and upgraded K04/RS6; verify the exact turbo outlet flange before ordering |
| Certificate listed | ISO9001:2000 |
Key Features
- Paired catless downpipes: replace the listed factory downpipe sections with a free-flow layout intended for performance builds.
- Mandrel-bent stainless tubing: supports a smooth pipe route and corrosion resistance.
- TIG-welded joints: provide the listed reinforced construction.
- CNC-machined, chrome-plated flanges: provide the listed connection surfaces and corrosion-resistant finish.
- 3-to-2.5-inch listed taper: allows the outlet connection to be checked against the rest of your exhaust before installation.
FLASHARK describes improved exhaust flow, turbo response, horsepower, torque and engine efficiency, with reduced turbo lag and a smoother driving experience. Results depend on the vehicle and setup; no SKU-specific test figures are provided here.
What Is Included
- 2 × 3-inch-to-2.5-inch upper sections
- 2 × 2.5-inch pipes
- 2 × V-band clamps
- 2 × gaskets
Check Before Ordering
- Match the vehicle year, engine and configuration to the fitment above.
- Compare your K03, K04 or RS6 turbo outlet flange and downstream exhaust connection with the product before purchase. The current listing contains both 2.25-inch and 2.5-inch outlet figures.
- This is a catless product. Check the applicable emissions and use requirements for your vehicle and location before ordering.
- Confirm oxygen-sensor locations, mating hardware and the condition of existing seals during fitment planning.
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.
