Agency Power BMW X5M X6M & X5/X6 xDrive50i 4.4L S63 N63 High-Flow Resonated Exhaust Downpipes - Catless/Decat Turbo Outlet Front Pipes, Test Pipes, 304 Stainless, V8 Twin Turbo Race Performance | AP-X6M-171

High-Flow Race Downpipes for BMW X5M, X6M and X5 X6 xDrive50i

Release serious performance from your twin-turbo V8 with this resonated race downpipe set from Agency Power. By cutting back exhaust back pressure and opening up the turbo outlet path, these front pipes deliver sharper throttle response, faster spool and a deeper, motorsport-inspired soundtrack while keeping cabin refinement in check thanks to the integrated resonators.

Crafted from robust 304-grade stainless steel with thick flanges and integrated flex joints, this bolt-on upgrade is built for longevity and reliable sealing. Dyno verified gains of 25 hp and 12 ft lb at the wheels were recorded during testing with no CEL observed in testing. Designed for track use, these parts provide a direct-fit solution to get the most from software calibrations and other supporting hardware.

Key benefits

• High-flow turbo outlet pipes reduce back pressure for improved power and response
• Resonated design helps control drone while enhancing the V8 tone
• Durable 304 stainless construction with thick flanges and flex sections for long-term reliability
• Direct fitment for the twin-turbo V8 platforms listed below - no cutting required
• Proven results on the rollers: 25 hp and 12 ft lb at the wheels in testing with no CEL in testing
• Suitable for both right-hand drive and left-hand drive vehicles

Vehicle applications

• BMW X5M
• BMW X6M
• BMW X5 xDrive50i
• BMW X6 xDrive50i

Why buy from us

At MJ Modifications we have supplied and installed these on customer cars and our experience has been excellent. Fitment is spot on, the tone is refined yet purposeful and feedback from owners has been consistently positive. If you want a serious front section upgrade for your 4.4-litre twin-turbo BMW, this is the kit we recommend.

Part number

AP-X6M-171

Manufacturer

Agency Power

Warranty

Limited lifetime warranty from the manufacturer when registered with them.

Installation

Professional fitting recommended. Book installation with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Important information

For racing use only. Not for road use.

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