Turner Motorsport Sports Cat Downpipes (200 Cell) – BMW S55 F8X M3 F80, M4 F82/F83, M2 Competition F87 | High Flow Catted Turbo Downpipes / Front Pipes | 304 Stainless, TIG Welded | Performance Downpipe Kit, Upgraded Turbo Outlet Pipes

Turner Motorsport Sports Cat Turbo Pipes for BMW F8X S55

Unlock the S55’s real performance with Turner Motorsport’s performance sports cat front pipes. If you want stronger mid-range shove, faster turbo spool and a richer exhaust tone on your BMW M3 or M4, this upgrade delivers. We run these on customer cars and the response, drivability and soundtrack are exactly what an M car deserves.

These performance turbo outlet pipes dramatically reduce back pressure compared with the restrictive factory setup, helping your twin turbos come on boost sooner for sharper throttle response and increased power potential. Crafted from premium 304 stainless steel with precision TIG welding and a clean brushed finish, they are engineered by Turner Motorsport for OE-like fit and long-term durability.

Why enthusiasts choose this upgrade

• Noticeably quicker turbo response and lower boost threshold
• Freer flowing sports catalysts for more power potential
• Deeper, crisper exhaust note without the drone of cheaper options
• Premium materials and construction for reliability on road and track
• Direct bolt-on fit to factory turbochargers with OE-style flanges

Key specifications

• Material: 304 stainless steel throughout
• Construction: TIG welded with brushed finish
• Tubing: 3" mandrel-bent pre-cat, 2.75" mandrel-bent post-cat, 0.063" wall
• Catalysts: 200 cell 4.3" OD metallic high-flow sports cats
• Flanges: 304 stainless, OE-style fitment

Fitment

For BMW with the S55 engine:

• F80 M3
• F82 M4 Coupe
• F83 M4 Convertible
• F87 M2 Competition

Installation, tuning and notes

As with most performance sports cat systems, a check engine light may occur. An appropriate ECU calibration or diagnostic solution may be required. Please check local regulations before installation.

Professional fitting available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

What you’ll gain

Expect a more responsive feel, improved mid-range pull and a stronger top-end when paired with suitable software. This is a proven upgrade for anyone chasing a faster-spooling, harder-hitting S55 without sacrificing drivability.

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