WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The Dinan High Flow X-pipe (D660-0060) is a performance-mandated exhaust upgrade for the 2015-2020 BMW M3/M4 (F80/F82), engineered to deliver an aggressive, throaty sound that harks back to Dinan's racing heritage. This component removes the factory center section after the secondary catalytic converters, including the large resonator, and replaces it with straight-through mandrel-bent 2.75" (70mm) T304 stainless steel tubing and a custom mandrel-bent 'X' crossover.
The Dinan 'X' is thoughtfully designed for maximum flow characteristics, unlike common stamped X-pipes, and is the key to the improved throaty sound and better flow. This upgrade provides the aural recognition that all M3/M4 owners deserve, especially when coupled with the associated Dinan axle-back exhaust.
Features:
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Resonator Deletion: Removes the factory center resonator section for a significant improvement in volume and a raw, aggressive sound.
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Optimized Flow: Stock hydro-formed 65mm tubing is replaced by 2.75" (70mm) mandrel-bent tubing for superior, restriction-free flow.
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Custom X-Pipe: Includes a custom X-pipe crossover made from mandrel-bent tubing for minimum restriction, which is superior to stamped X-pipes.
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Structural Quality: Built from 100% 304 stainless steel construction with $\text{OE}$ quality clamps and flanges for long-term durability and simplified installation.
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Sound Profile: Elicits a perfect mix of exotic undertones and raw aggression, delivering the aural recognition M3/M4 owners demand.
Product Contains:
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(1) Dinan High Flow X-Pipe Mid-Section Assembly (with custom 'X')
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(1) Set of OE Quality Clamps and Flanges
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(1) Set of Mounting Hardware
Important Note: Since a resonator is deleted, there is potential for increased cabin noise. This kit is only confirmed to fit with the Dinan Free Flow Axle Back and stock exhaust systems (non-M Performance). Fitment with other aftermarket axle-back units is not guaranteed.
Warranty This product is supported by a Manufacturer's Warranty. Note: Manufacturer warranty terms are subject to change.
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