AIRTEC Motorsport Catless/Decat Downpipes for BMW M5 F10 & M6 F06 F12 F13 (S63/S63TU S63B44TU) – Turbo Cat Delete Race Downpipe Set, Stainless, Stage 2 Ready

Race-spec catless downpipes for BMW S63B44TU V8, perfect for F10 M5 and F06 F12 F13 M6 owners chasing flow, response and sound

Unlock serious exhaust flow and sharper turbo response with these AIRTEC Motorsport cat delete downpipes for the BMW S63 twin-turbo 4.4 V8. By replacing the restrictive primary catalysts in the factory turbo outlet pipes, these free-flow down pipes reduce back pressure, improve spool and deliver a harder-hitting, more aggressive soundtrack. We have fitted these multiple times at MJ Modifications and customer feedback has been outstanding for drivability, mid-range punch and exhaust tone.

Why enthusiasts choose this upgrade

• Cast turbo outlet elbows maintain full internal diameter for maximum gas velocity and minimal turbulence
• Durable stainless steel construction with smoothly formed bends for high flow and heat resilience
• Direct-fit design connects to both OEM and performance cat-back systems
• Enhanced throttle response and stronger mid-range pull, further improved with a calibration
• Finished with AIRTEC detailing for an OE-plus look

Vehicle compatibility

• BMW F10 M5, S63B44TU
• BMW M6 S63B44TU, F06 Gran Coupe
• BMW M6 S63B44TU, F12 Convertible
• BMW M6 S63B44TU, F13 Coupe

Ideal for performance builds

Perfect foundation hardware for higher power setups, track cars and ECU tuning on the S63TU platform. Pair with a professional remap to maximise gains, reduce turbo back pressure and sharpen transient response. A popular choice for owners targeting stage 2 style calibrations on the BMW M5 and M6.

Installation

Professional fitting recommended. MJ Modifications in Warwickshire can install and set up your system. Request a fitting quote at info@mjmodifications.co.uk.

Motorsport use only

For off road and competition use only. Catless pipes will not pass a UK MOT or police roadside emissions check.

Search-friendly terms

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