Scorpion Exhaust Decat Downpipe For BMW F20 & F21 M135i

The Scorpion Exhaust Decat Downpipe for the BMW F20 and F21 M135i is a high-performance upgrade that removes the restrictive factory catalytic converter, freeing up exhaust gas flow for sharper throttle response, quicker turbo spool, and a significantly more aggressive exhaust note. Designed specifically for BMW’s N55-powered M135i, this downpipe unlocks the full potential of the engine when paired with the correct ECU calibration.Manufactured in the UK from T304 motorsport-grade stainless steel, the Scorpion Decat Downpipe offers exceptional strength, durability, and weight savings over the OEM component. Precision mandrel-bent pipework ensures optimised flow and a direct fit to both OEM and Scorpion exhaust systems.Two fitment versions are available depending on the turbocharger type:SBMC066 – Pre-June 2013 (PWG, pneumatic wastegate)SBMC067 – Post-June 2013 (EWG, electronic wastegate)Key Features:Compatible with BMW F20/F21 M135i (2012–2016, N55 engine)Removes restrictive OEM catalyst for maximum flow and performanceAvailable in two fitment versions:SBMC066 – PWG (before June 2013)SBMC067 – EWG (after June 2013)Significantly improves throttle response and turbo spool timeEnhances exhaust tone for a louder, more aggressive soundDesigned to fit seamlessly with OEM or Scorpion exhaust systemsConstructed from T304 stainless steel for strength and corrosion resistancePrecision-engineered and manufactured in the UK since 1992Covered by Scorpion’s lifetime guarantee*Compatibility:BMW F20 M135i 5-Door (2012–2016)BMW F21 M135i 3-Door (2012–2016)Unlock the performance of your BMW M135i with the Scorpion Decat Downpipe – a stainless steel upgrade that delivers maximum flow, faster response, and an aggressive exhaust soundtrack.