Scorpion Exhaust Decat Downpipe For BMW F20 & F21 M135i

Scorpion Exhaust Decat Downpipe For BMW F20 & F21 M135iThe 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 BMWs N55 powered M135i, this downpipe unlocks the full potential of the engine when paired with the correct ECU calibration. Manufactured in the

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 performance

• Available in two fitment versions:

  • SBMC066 – PWG (before June 2013)

  • SBMC067 – EWG (after June 2013)

• Significantly improves throttle response and turbo spool time

• Enhances exhaust tone for a louder, more aggressive sound

• Designed to fit seamlessly with OEM or Scorpion exhaust systems

• Constructed from T304 stainless steel for strength and corrosion resistance

• Precision-engineered and manufactured in the UK since 1992

• Covered 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.