Active Autowerke BMW S58 Catless Downpipe/Downpipes, Decat/De‑Cat Turbo Outlet for X3M F97 & X4M F98 (2019+) – Race Test Pipe Turbo Elbow – V‑Band Bolt‑On 304 Stainless, 4.5in Cast Upper, 3in Tube – Performance Exhaust Upgrade – 11‑064X

Active Autowerke S58 High-Flow De‑Cat Turbo Outlet for BMW F97 X3M and F98 X4M

Give your S58-powered X3M or X4M the exhaust upgrade it deserves with this freer-flowing race de‑cat from Active Autowerke. Built for off-road competition use, this high-flow turbo outlet slashes back pressure, boosts turbine efficiency, sharpens throttle response and unleashes a harder-hitting soundtrack. It is a direct-fit performance exhaust component that lets the twin turbos breathe, creating headroom for tuning and a more urgent feel across the rev range.

We run this hardware on customer cars and it delivers exactly what enthusiasts want from a quality motorsport de‑cat pipe. Fit, finish and reliability are superb, and feedback on drivability and sound has been consistently positive.

Highlights

• Engineered for the BMW S58 in the F97 X3M and F98 X4M
• Race-use de‑cat design for maximum exhaust gas velocity and low restriction
• 4.5 inch cast upper section feeding into 3 inch 304 stainless tubing, tapering to 70 mm to mate to the factory system
• Casted stainless V-band connection for an accurate, leak-free seal
• TIG-welded 304 stainless steel with stainless flex joints for long-term durability
• Direct bolt-on to the OE cat-back. No cutting or welding required
• Manufactured in Miami, Florida

What you can expect

• Faster turbo spool and stronger mid-range pull
• Improved throttle response and a more engaging, motorsport-inspired exhaust note
• Optimised flow that complements remaps and higher power goals

Fitment

• BMW X3M F97 2019+
• BMW X4M F98 2019+
• Engine: S58 twin-turbo inline-six

Part number

11-064X

Fitting and support

Want it supplied and fitted by specialists Contact MJ Modifications in Warwickshire for professional installation. Request a fitting quote at info@mjmodifications.co.uk.

Important use notice

This motorsport component is for off-road and race use only. Not road legal. Check and comply with local regulations before purchase and installation.

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