High-Performance SS304 Stainless Steel Downpipe for BMW 3 Series 335i (2005–2016)

Unlock the true potential of your N54/N55 engine.

Designed for the BMW 3 Series (E90/E92/F30 chassis), this premium stainless steel downpipe is engineered to replace the restrictive factory catalytic converter, significantly reducing backpressure and increasing exhaust gas flow. Whether for street performance or track use, this upgrade delivers faster turbo spool, increased horsepower, and an aggressive exhaust note.

Precision-manufactured from T304 Stainless Steel with TIG-welded joints, this downpipe offers superior durability and heat resistance compared to stock components. The mirror-polished finish ensures it looks as good as it performs.

Key Performance Benefits

• Increased Power: Significant gains in horsepower and torque by reducing exhaust restriction (typically +15-25 HP with tuning).

• Faster Turbo Spool: Improves throttle response and reduces turbo lag for instant acceleration.

• Aggressive Sound: Enhances the natural exhaust tone of the inline-6 engine, delivering a deeper, sportier growl.

• Premium Construction: Made from 1.5mm thick SS304 Stainless Steel, preventing cracking under high thermal stress.

• Precision Fitment: CNC-machined SS304 flanges ensure a leak-free seal and direct bolt-on installation.

Technical Specifications

⚠️ Important Fitment Compatibility

This listing covers the 2005-2016 model years. Please identify your engine code before ordering:

• N54 Engine (Twin Turbo): Found in 2006–2010 models (E90/E92/E93). Requires a Set of 2 Downpipes.

• N55 Engine (Single Turbo): Found in 2011–2016 models (E90 LCI/F30). Requires a Single Downpipe.

  • Note for N55: Please check if your model uses a Pneumatic (PWG) or Electronic (EWG) wastegate (Production split approx. July 2013).

Packaging & Delivery

• Selling Unit: Single Item / Set

• Package Dimensions: 60 x 38 x 23 cm

• Gross Weight: 5.000 kg

• Delivery Time: 35 Days

• Packaging: Secure Carton Packing with protective wrapping.

Tuning Required: As with all high-flow downpipes, an ECU tune (re-map) is recommended to maximize performance gains and prevent a "Check Engine Light" (CEL).