Wagner Tuning BMW F-Series N55 Catless Downpipe Kit -6/13

Wagner Tuning BMW F-Series N55 Catless Downpipe Kit -6/13The Wagner Tuning N55 Catless Downpipe Kit is a high flow, motorsport focused exhaust upgrade designed for early build BMW F Series N55 models produced up to June 2013. By removing the factory catalytic converter, this downpipe eliminates one of the largest restrictions in the N55 exhaust system maximising exhaust flow, improving turbo spool and unlocking stronger mid range performance. This is the ideal downpipe for drivers running Stage 2 tunes,

The Wagner Tuning N55 Catless Downpipe Kit is a high-flow, motorsport-focused exhaust upgrade designed for early-build BMW F-Series N55 models produced up to June 2013.
By removing the factory catalytic converter, this downpipe eliminates one of the largest restrictions in the N55 exhaust system — maximising exhaust flow, improving turbo spool and unlocking stronger mid-range performance.

This is the ideal downpipe for drivers running Stage 2 tunes, hybrid turbos or track-focused setups where maximum performance and response are the priority.

Key Features

• Fully catless design for maximum exhaust velocity

• Significantly reduced turbo spool time

• Lower backpressure for improved mid-range torque

• TIG-welded stainless-steel construction for long-term durability

• OEM mounting points for direct bolt-on installation

• Supports high-output Stage 2 and hybrid turbo builds

• Aggressive exhaust tone with increased turbo sound

• Designed for early N55 F-Series models (pre-07/2013 fitment)

Compatibility

BMW F-Series N55 (Build date – up to 06/2013)

• F20 / F21 – 1 Series

  • M135i (early production, N55)

• F30 / F31 / F34 – 3 Series

  • 335i (pre-07/2013 N55)

• F32 / F33 / F36 – 4 Series

  • Early N55 fitment only (rare)

This version fits vehicles with the early downpipe configuration.
Use the 07/2013+ version for LCI or later N55 models.

Ideal For

• Stage 2 and hybrid-turbo N55 builds

• Track-day or off-road performance applications

• Drivers wanting the fastest turbo response and highest flow

• Cars suffering from backpressure with the OEM catalytic converter

• Vehicles paired with uprated intercoolers, charge pipes and intakes

Why Choose the Wagner N55 Catless Downpipe (–06/2013)

The early N55 catalytic converter is highly restrictive under increased boost, limiting both turbo efficiency and top-end power.
Wagner’s catless design removes this bottleneck completely, providing:

• Much quicker turbo spool

• Stronger mid-range torque

• Sharper throttle response

• Lower EGTs for improved engine safety at high load

Built with TIG-welded stainless steel and engineered for OE-level fitment, the Wagner catless downpipe is a proven upgrade for early N55 owners chasing maximum performance.

Installing / Notes

• For off-road / track use only

• ECU tuning required to prevent CEL warnings and optimise performance

• Professional installation strongly recommended

• Not suitable for OPF/GPF-equipped models