Unlock the full potential of your N55-powered BMW with this 4-Inch Catless Downpipe, designed specifically for Electronic Wastegate (EWG) models. Replacing the restrictive factory downpipe allows exhaust gases to flow more freely, helping the turbocharger operate more efficiently whilst improving overall engine response.
Manufactured from high-grade stainless steel, the larger 4-inch design delivers improved exhaust flow alongside a noticeably louder and more aggressive exhaust note. It also helps improve turbo spool, throttle response and power delivery, making it one of the most effective performance upgrades for the N55 platform.
Designed for direct fitment to N55 EWG models, this downpipe provides a secure installation while maintaining excellent exhaust flow.
Suitable for both stock and upgraded hybrid turbo setups, this downpipe is an ideal choice for Stage 2 builds and enthusiasts looking to get more performance and sound from their N55-powered BMW.
Key Features
• Large 4-inch downpipe design
• Direct bolt-on fitment
• High-grade stainless steel construction
• Reduces exhaust back pressure
• Improves exhaust gas flow
• Supports increased horsepower and torque
• Improves turbocharger efficiency
• Faster turbo spool and improved throttle response
• Deeper, more aggressive exhaust note
• Compatible with stock and upgraded turbo setups
• Ideal for Stage 2 and higher-performance builds
• Designed specifically for BMW N55 Electronic Wastegate (EWG) applications
• One of the most effective supporting modifications for tuned N55 vehicles
Please Note
• For off-road, motorsport and track use only.
• ECU tuning is recommended following installation.
Included
• 1x 4-Inch Catless Downpipe
Installation
Direct bolt-on replacement for the factory downpipe. Professional installation is recommended. ECU tuning is advised to maximise performance benefits and prevent catalyst efficiency fault codes.
Compatible Vehicles
• BMW M135i – F20 / F21
• BMW M235i – F22 / F23
• BMW 335i – F30 / F31
• BMW 435i – F32 / F33 / F36
• BMW M2 – F87 (N55)
Compatible with vehicles equipped with the BMW N55 engine and Electronic Wastegate (EWG).
Please verify that your vehicle is equipped with an N55 EWG engine before purchasing, as this downpipe is not compatible with Pneumatic Wastegate (PWG) models.
Please Note: The BMW M2 Competition uses the S55 engine and is not compatible with this downpipe.
