Catless Downpipe BMW S55

• Direct-fit pair for BMW S55 (M2/M3/M4) — retains OEM catalytic heat shield
• 100% 304 stainless steel, mandrel-bent 3.5" piping — smooth transitions to exhaust
• Fully TIG-welded construction with CNC-machined V-band turbo flange
• Includes flanges and O2 bungs; OE-style exhaust hanger for proper support
• Compatible with factory or aftermarket exhaust systems
• Estimated gains: +30+ whp, +35+ wtq — improved throttle response & faster turbo spool
• Easy bolt-on installation — designed to match OEM mounting points

Product description Upgrade your S55-powered BMW with this high-flow 3.5" downpipe pair engineered for performance and durability. Built from 100% 304 stainless steel and precision mandrel-bent for smooth exhaust flow, these downpipes are fully TIG welded and feature a CNC-machined V-band turbo flange for a perfect seal. The design retains the OEM catalytic heat shield and uses an OE-style hanger to maintain factory support and fitment. Supplied with flanges and O2 bungs, these downpipes work with both stock and aftermarket exhaust systems to deliver quicker turbo spool, sharper throttle response, and significant horsepower and torque gains.

Compatibility Fits S55 3.0L twin-turbo engines:

• F80 M3
• F82/F83 M4
• F87 M2 Competition / S55-equipped variants

Package contents

• 2 x Downpipes (pair)
• Flanges and O2 bungs included

Important notice Installation may require ECU tuning for optimal performance and to avoid CEL. Verify local emissions regulations before purchase and installation. Professional installation recommended.

Call to action Add the pair to cart to unlock faster spool, stronger mid-range power, and a more aggressive exhaust note.