The VRSF Catless Downpipe for BMW N55 engines is one of the most effective upgrades for direct power gain and better turbo performance.
By removing the restrictive catalytic converter, the back pressure is significantly reduced, which ensures faster spool, +20–25 hp (with tune) and a much more aggressive exhaust sound. Made of high-quality SS304 stainless steel with CNC machined flanges for perfect fit and durability.
Advantages
• +20–25 hp with software
• Faster turbo spool
• Less back pressure
• More aggressive exhaust sound
• High-quality SS304 construction
• Lifetime warranty
Technical specifications
• Diameter: 3.5” or 4.0” (depending on model)
• Material: SS304 stainless steel
• Construction: TIG welded
• Flanges: CNC machined SS304
• Type: catless (without catalytic converter)
Important information
• Until 07/2013 → 3.5” version
• After 07/2013 → 4.0” version
• M235i / 435i → always 4.0”
• Unsure? Check via VIN
Compatibility
BMW
• 1 Series F20/F21 – 135i
• 2 Series F22/F23 – 235i
• BMW M2 F87 – 3.0
• 3 Series F30/F31/F34 – 335i
• 4 Series F32/F33/F36 – 435i
Contents
• VRSF Downpipe
Frequently Asked Questions
Is tuning necessary?
Yes, for maximum gain (+20–25 hp), a tune is recommended.
Does this fit right away?
Yes, plug & play provided the correct diameter is chosen.
Is this legal?
Catless downpipes are usually not permitted on public roads.
