VRSF – High Flow Cat Downpipe – BMW 135i / 335i F2x / F3x N55 (PWG)

Description

This VRSF High Flow Catered Downpipe is one of the most effective upgrades for BMWs with the N55 PWG engine. The restrictive OEM catalytic converter is replaced with a 200 cell high-flow racecat, which results in significantly less back pressure, faster turbo spooling, and a noticeable increase in power and torque. The result is sharper response, a more aggressive exhaust note, and improved performance, especially when combined with tuning.

The downpipe has a 3.5 inch (89 mm) inlet and is made entirely of hand-made TIG-welded 304 stainless steel. The CNC-machined 304 stainless steel flanges ensure a perfect fit and durability. VRSF also offers a lifetime warranty and a "No Hassle" fitment guarantee. Suitable for all BMW N55 PWG engines from the F-series.

Advantages

• 200 cell high-flow sports cat
• Faster turbo spool and less back pressure
• Power gain 20–25 hp with tuning
• 3.5 inch high-flow design
• Hand-made TIG-welded stainless steel 304
• CNC machined SS304 flanges
• More aggressive exhaust sound
• Lifetime warranty + fitment warranty
• Ideal upgrade for tuned N55 engines

Technical specifications

• Inlet diameter: 3.5 inches (89 mm)
• Type: High-flow catted downpipe
• Catalyst: 200 cell racing cat
• Material: RVS304 (TIG-welded)
• Flanges: CNC-machined stainless steel 304
• Power gain: ~20–25 hp with tuning
• Compatibility: PWG N55 F-series

Compatibility

• BMW 1-Series F20/F21 – 135i
• BMW 3-Series F30/F31/F34 – 335i
(PWG N55 only, not suitable for EWG models.)

Contents

• VRSF 3.5” High Flow Catted Downpipe
• Mounting flanges

Frequently Asked Questions

Does this downpipe fit all N55 engines?
No, only on PWG N55 F-series models. If in doubt, a VIN check is required.

Does this downpipe have a sports cat?
Yes, a 200 cell high-flow racecat for maximum flow.

How much power does the car gain?
With tuning about 20–25 hp, depending on setup.

Article number: VRS-DPS-N55-005