Stone Exhaust BMW N20 Eddy Catalytic Catted Turbo Downpipe - E84 E89 F25 F26 - X1 X3 X4 Z4 20i/28i - High Flow, OEM Fit, Euro 6, UK MOT Friendly (A206XE)

Stone Exhaust Eddy-Cat Turbo Outlet Pipe for BMW N20 – E84 E89 F25 F26 platforms – X1 X3 X4 Z4 20i 28i – Part No. A206XE

Transform the way your BMW N20 pulls and sounds with this performance sports-cat turbo outlet from Stone Exhaust. Designed as a direct replacement for the factory turbo down pipe, it delivers freer flow, quicker spool-up, stronger mid‑range punch and crisp throttle response while remaining MOT compatible and Euro 6 compliant. Expect factory-style fit, durable construction in premium 304 stainless steel and lambda sensor placement that keeps the engine management happy with no warning lights.

Why this upgrade works on the N20

• Patented eddy catalytic core creates a controlled swirl for efficient emissions control with low restriction
• Sharper acceleration and faster boost build for real-world drivability gains
• Optimised O2 boss positioning for accurate feedback and no dash lights
• High-quality 304 stainless steel for corrosion resistance and long service life
• Factory-style direct fit that bolts up to original mounting points
• MOT compatible and Euro 6 compliant performance catalyst

Engineering that inspires confidence

Stone’s R&D team 3D scanned the OEM system across E84, E89, F25 and F26 chassis to refine pipe routing, diameter and bend geometry. Precision 7‑axis CNC bending maintains roundness for smooth gas flow. At the turbo flange, crisscross and overlapping welds are used for strength in high-heat zones, with robotic spot welding for consistent, repeatable quality. The result is a robust performance catalyst that fits like stock and performs like a true upgrade.

Fitment – BMW N20 turbocharged petrol models

BMW X Series

• E84 X1 20i, 28i (2008–2015)
• F25 X3 20i 2013–2017, X3 20i xDrive 2011–2017
• F25 X3 28i 2013–2017, X3 28i xDrive 2009–2017
• F26 X4 20i xDrive 2013–2018
• F26 X4 28i xDrive 2013–2018

BMW Z Series

• E89 Z4 20i (2008–2016)

What our customers say

We have installed this Stone Exhaust eddy-cat down pipe on multiple N20 cars at MJ Modifications and feedback has been consistently positive. Owners love the OEM‑plus fit, the cleaner exhaust note and the way the car pulls harder without triggering engine lights.

Key details

• Part number: A206XE
• Material: 304 grade stainless steel
• Catalyst: Eddy catalytic technology with noble metal substrate
• Direct bolt-on replacement for the factory turbo outlet
• Retains factory lambda sensor locations
• Euro 6 compliant and MOT compatible

Installation

Professional fitting recommended. MJ Modifications offers installation in Warwickshire. For a quote, email info@mjmodifications.co.uk.

Manufacturer and warranty

Brand: Stone Exhaust

Warranty: 2 years from manufacturer

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