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    Sale!New!

    Dinan 15-20 BMW M3/M4 (F80/F82/F83) Free Flow Axleback Exhaust System - Polished Tips

    Vendor: Dinan
    Part Number: D660-0050
    Save $530
    $2,113.95 $2,643.95

    In Stock

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    Dinan's Free Flow axle-back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration, while reducing drone inside the vehicle, thanks to computer-controlled valves that limit noise during low-speed driving and open fully during high-load conditions to allow free flow. The exhaust gasses exit through larger laser engraved polished, or ceramic black, quad tips.

    Installation Instructions
    • Computer controlled valve limits noise during low speed driving; valve opens fully during high-load conditions to allow free flow
    • Twin secondary exhaust valves with a whopping 76mm diameter, making them 45% less restrictive than the OE valves.
    • Operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-Drive settings.
    • Quad 3.5" black ceramic coated, or polished stainless, laser engraved exhaust tips
    • Uses the factory brackets and hangers for a factory-like fitment
    • Drone abatement technologies used to reduce cabin resonance
    • Dinan exhaust is 3 lbs lighter than stock
    • Stock exhaust valve actuaters are reused
    • 100% 304 stainless steel construction
    • Enjoyably louder, sporter sound
    • More Power: +5 HP

    This Part Fits:

    Year Make Model Submodel
    2015-2018 BMW M3 Base
    2015-2020 BMW M4 Base
    2019-2020 BMW M4 CS
    2016 BMW M4 GTS
    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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