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 Middle Exhaust (X-Pipe) (D660-0094) is the budget-friendly solution for enthusiasts looking to immediately elevate the external acoustics of their BMW G80 M3 or G82/G83 M4. This middle exhaust introduces a more aggressive tone and a significant increase in volume over the stock system while retaining the factory muffler.
This system replaces the restrictive factory center section (including both resonators) with larger 76mm (3-inch) T304 stainless steel tubing for freer flowing capabilities. The focal point is the beautifully crafted mandrel-bent X-pipe crossover, which promotes even flow to both banks, removing unwanted sound nuances present in the stock system. This results in a louder, smoother, and fuller exhaust note that delivers smiles time and time again. As a bonus, the system is 5-pounds lighter than the stock mid-section (Dinan: 17 lbs vs. Stock: 22 lbs). When the desire for more arises, this middle exhaust is engineered to pair perfectly with the matching Dinan axle-back system for maximum aural enhancement.
Performance & Feature Highlights:
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Acoustic Upgrade: Delivers a smoother, louder, and sportier sound while retaining the factory muffler.
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Flow Enhancement: 76mm (3-inch) piping replaces stock 70mm (2.75-inch) tubing for increased flow.
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Weight Reduction: 5-pounds lighter than the stock mid-section.
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Optimized Sound: Includes a mandrel-bent X-pipe crossover (unlike stamped alternatives) that promotes even flow and a fuller exhaust note.
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Resonator Delete: Deletes both resonators between the secondary catalysts and rear muffler for increased volume.
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Premium Construction: Crafted from 100% 304 stainless steel with factory-like fitment.
Product Contains:
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(1) Dinan High Flow Middle Exhaust / X-Pipe
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All Necessary Mounting Hardware
Fitment Note: This middle exhaust is only confirmed to fit with the Dinan Free Flow Axle Back and stock exhaust systems (including M Performance). Fitment with other axle back units is not guaranteed.
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