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    • Flowmaster 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound 954010-12
    • Flowmaster 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound 954010-12
    • Flowmaster 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound 954010-12
    • 10 Series Delta Force Race Muffler 10 Series Race Muffler 4.00 Center In 4.00 Center Out Aggressive Sound Flowmaster
    • 10 Series Delta Force Race Muffler 10 Series Race Muffler 4.00 Center In 4.00 Center Out Aggressive Sound Flowmaster
    • 10 Series Delta Force Race Muffler 10 Series Race Muffler 4.00 Center In 4.00 Center Out Aggressive Sound Flowmaster
    • 10 Series Delta Force Race Muffler 10 Series Race Muffler 4.00 Center In 4.00 Center Out Aggressive Sound Flowmaster
    • 10 Series Delta Force Race Muffler 10 Series Race Muffler 4.00 Center In 4.00 Center Out Aggressive Sound Flowmaster
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    Sale!

    Flowmaster 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound 954010-12

    Vendor: Flowmaster
    Part Number: 954010-12
    Save $38
    Sale Price $299.95 Regular Price $337.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    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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    Single chamber. The 10 Series race mufflers are intended for racing applications and utilize Flowmaster's Delta Flow technology for maximum performance. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Will provide a noticeable dB reduction over open headers.


    Flowmaster 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound 954010-12


    Specifications:

    614 5.00
    615 7.50
    621 Aluminized Steel
    616 12.00
    California Proposition 65 No
    1882 No
    17 Black
    1161 0
    Exhaust Tip Quantity Sold Separately
    Finish High-Temperature Paint
    3390 Performance
    617 No
    618 No
    601 4.00
    619 Center
    1171 4.13
    620 1
    596 Weld-On
    596 Clamp-On
    1174 Chambered
    622 4.00
    304 Center
    1172 4.13
    623 1
    598 Single
    8971 13.00
    624 No
    33 Oval
    Sound Level Aggressive
    626 No
    3145 Universal
    Brand Flowmaster
    Category Exhaust
    Emission Code 5
    Fitment Universal
    Inlet Diameter 4.00
    Mount Type Uses New Hangers (Not Included)
    Muffler Series 10 Series Delta Force
    Product Type Race Products
    Vehicle Type Classic Muscle Car
    Vehicle Type Race
    9957 Slip-Fit
    9958 Slip-Fit
    part type Exhaust Muffler
    Sub Category Mufflers
    614 5.00
    615 7.50
    621 Aluminized Steel
    616 12.00
    California Proposition 65 No
    1882 No
    17 Black
    1161 0
    Exhaust Tip Quantity Sold Separately
    Finish High-Temperature Paint
    3390 Performance
    617 No
    618 No
    601 4.00
    619 Center
    1171 4.13
    620 1
    596 Weld-On
    596 Clamp-On
    1174 Chambered
    622 4.00
    304 Center
    1172 4.13
    623 1
    598 Single
    8971 13.00
    624 No
    33 Oval
    Sound Level Aggressive
    626 No
    3145 Universal
    Brand Flowmaster
    Category Exhaust
    Emission Code 5
    Fitment Universal
    Inlet Diameter 4.00
    Mount Type Uses New Hangers (Not Included)
    Muffler Series 10 Series Delta Force
    Product Type Race Products
    Vehicle Type Classic Muscle Car
    Vehicle Type Race
    9957 Slip-Fit
    9958 Slip-Fit
    part type Exhaust Muffler
    Sub Category Mufflers
    Description_ABR MUFF RACE
    Description_SHO MUFF 4 IN(C)/OUT(C)
    Description_INV 4 IN(C)/OUT(C) 10 SERIES RACE
    Description_ASC Universal Race Muffler - Not a direct fit. Some adaptation required.
    Description_DES Flowmaster 10 Series Delta Force Race Muffler
    Description_EXT 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound
    Description_MKT Single chamber. The 10 Series race mufflers are intended for racing applications and utilize Flowmaster's Delta Flow technology for maximum performance. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Will provide a noticeable dB reduction over open headers.
    Description_FAB Race proven Delta Flow technology
    Description_FAB No internal packing to blowout
    Description_FAB Minimal decibel reduction over open headers
    Description_FAB Durable fully welded 16 gauge aluminized steel - single chamber race muffler
    Description_ABR MUFF RACE
    Description_SHO MUFF 4 IN(C)/OUT(C)
    Description_INV 4 IN(C)/OUT(C) 10 SERIES RACE
    Description_ASC Universal Race Muffler - Not a direct fit. Some adaptation required.
    Description_DES Flowmaster 10 Series Delta Force Race Muffler
    Description_EXT 10 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound
    Description_MKT Single chamber. The 10 Series race mufflers are intended for racing applications and utilize Flowmaster's Delta Flow technology for maximum performance. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Will provide a noticeable dB reduction over open headers.
    Description_FAB Race proven Delta Flow technology
    Description_FAB No internal packing to blowout
    Description_FAB Minimal decibel reduction over open headers
    Description_FAB Durable fully welded 16 gauge aluminized steel - single chamber race muffler


    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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