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    • Flowmaster 80 Series Crossflow  - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582
    • Flowmaster 80 Series Crossflow  - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582
    • Flowmaster 80 Series Crossflow  - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582
    • Flowmaster 80 Series Crossflow  - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582
    • Flowmaster 80 Series Crossflow  - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582
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    • 80 Series Chambered Muffler 80 Series Crossflow 2.50 Dual In 2.50 Dual Out Aggressive Sound Flowmaster
    • 80 Series Chambered Muffler 80 Series Crossflow 2.50 Dual In 2.50 Dual Out Aggressive Sound Flowmaster
    • 80 Series Chambered Muffler 80 Series Crossflow 2.50 Dual In 2.50 Dual Out Aggressive Sound Flowmaster
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    Sale!

    Flowmaster 80 Series Crossflow - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582

    Vendor: Flowmaster
    Part Number: 42582
    Save $157
    Sale Price $124.95 Regular Price $281.95

    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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    The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Each end of the muffler has an inlet and outlet. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros & Firebirds with transverse mufflers. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.


    Flowmaster 80 Series Crossflow - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound 42582


    Specifications:

    614 4.00
    614 4.00
    615 18.00
    615 18.00
    621 Aluminized Steel
    621 Aluminized Steel
    616 9.75
    616 9.75
    California Proposition 65 No
    California Proposition 65 No
    1882 No
    1882 No
    17 Black
    17 Black
    1161 0
    1161 0
    Exhaust Tip Quantity Sold Separately
    Exhaust Tip Quantity Sold Separately
    Finish High-Temperature Paint
    Finish High-Temperature Paint
    3390 Performance
    3390 Performance
    617 No
    617 No
    618 No
    618 No
    601 2.50
    601 2.50
    Inlet Location Dual
    Inlet Location Dual
    1171 2.63
    1171 2.63
    620 2
    620 2
    596 Weld-On
    596 Weld-On
    596 Clamp-On
    596 Clamp-On
    1174 Chambered (Transverse)
    1174 Chambered (Transverse)
    622 2.50
    622 2.50
    Outlet Location Dual
    Outlet Location Dual
    1172 2.63
    1172 2.63
    623 2
    623 2
    598 Dual
    598 Dual
    8971 24.00
    8971 24.00
    624 No
    624 No
    33 Oval
    33 Oval
    Sound Level Aggressive
    Sound Level Aggressive
    626 No
    626 No
    3145 Universal
    3145 Universal
    Brand Flowmaster
    Brand Flowmaster
    Category Exhaust
    Category Exhaust
    Emission Code 5
    Emission Code 5
    Fitment Universal
    Fitment Universal
    Inlet Diameter 2.50
    Inlet Diameter 2.50
    Mount Type Uses New Hangers (Not Included)
    Mount Type Uses New Hangers (Not Included)
    Muffler Series 80 Series Crossflow
    Muffler Series 80 Series Crossflow
    Product Type Street Mufflers
    Product Type Street Mufflers
    Vehicle Type Classic Muscle Car
    Vehicle Type Classic Muscle Car
    Vehicle Type Street/Strip
    Vehicle Type Street/Strip
    Vehicle Type Late Model Muscle Car
    Vehicle Type Late Model Muscle Car
    Warning California Proposition 65
    Warning California Proposition 65
    9957 Slip-Fit
    9957 Slip-Fit
    9958 Slip-Fit
    9958 Slip-Fit
    part type Exhaust Muffler
    part type Exhaust Muffler
    Sub Category Mufflers
    Sub Category Mufflers
    Description_ABR MUFF 2.50IN
    Description_SHO FM80SRS DUAL/D 2.5
    Description_INV 2.5"IN(D)/OUT(D) 80 SERIES
    Description_ASC Fits 1967 to 1974 Chevrolet Camaro and Pontiac Firebird.
    Description_DES Flowmaster 80 Series Chambered Muffler
    Description_EXT 80 Series Crossflow - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound
    Description_MKT The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Each end of the muffler has an inlet and outlet. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros & Firebirds with transverse mufflers. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
    Description_FAB Aggressive Sound Exterior Exhaust Tone
    Description_FAB Noticeable interior resonance
    Description_FAB The original two chamber design
    Description_FAB Cross Flow Applications
    Description_ABR MUFF 2.50IN
    Description_SHO FM80SRS DUAL/D 2.5
    Description_INV 2.5"IN(D)/OUT(D) 80 SERIES
    Description_ASC Fits 1967 to 1974 Chevrolet Camaro and Pontiac Firebird.
    Description_DES Flowmaster 80 Series Chambered Muffler
    Description_EXT 80 Series Crossflow - 2.50 Dual In / 2.50 Dual Out - Aggressive Sound
    Description_MKT The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Each end of the muffler has an inlet and outlet. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros & Firebirds with transverse mufflers. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
    Description_FAB Aggressive Sound Exterior Exhaust Tone
    Description_FAB Noticeable interior resonance
    Description_FAB The original two chamber design
    Description_FAB Cross Flow Applications


    This Part Fits:

    Year Make Model Submodel Notes
    1987 Buick Regal GNX
    1985 Buick Regal Grand National
    1986 Buick Regal Grand National
    1987 Buick Regal Grand National
    1969 Chevrolet Camaro Base
    1970 Chevrolet Camaro Base
    1971 Chevrolet Camaro Base
    1972 Chevrolet Camaro Base
    1973 Chevrolet Camaro Base
    1974 Chevrolet Camaro Base
    1975 Chevrolet Camaro Base
    1976 Chevrolet Camaro Base
    1977 Chevrolet Camaro Base
    1978 Chevrolet Camaro Base
    1979 Chevrolet Camaro Base
    1980 Chevrolet Camaro Base
    1979 Chevrolet Camaro Berlinetta
    1980 Chevrolet Camaro Berlinetta
    1981 Chevrolet Camaro Berlinetta
    1973 Chevrolet Camaro LT
    1974 Chevrolet Camaro LT
    1975 Chevrolet Camaro LT
    1976 Chevrolet Camaro LT
    1977 Chevrolet Camaro LT
    1978 Chevrolet Camaro LT
    1976 Chevrolet Camaro LT Rally Sport
    1977 Chevrolet Camaro LT Rally Sport
    1978 Chevrolet Camaro LT Rally Sport
    1976 Chevrolet Camaro Rally Sport
    1977 Chevrolet Camaro Rally Sport
    1978 Chevrolet Camaro Rally Sport
    1979 Chevrolet Camaro Rally Sport
    1980 Chevrolet Camaro Rally Sport
    1981 Chevrolet Camaro Sport
    1967 Chevrolet Camaro SS
    1968 Chevrolet Camaro SS
    1969 Chevrolet Camaro SS
    1970 Chevrolet Camaro SS
    1971 Chevrolet Camaro SS
    1972 Chevrolet Camaro SS
    1968 Chevrolet Chevy II Nova
    1969 Chevrolet Nova Base
    1970 Chevrolet Nova Base
    1970 Chevrolet Nova Base
    1971 Chevrolet Nova Base
    1972 Chevrolet Nova Base
    1973 Chevrolet Nova Base
    1974 Chevrolet Nova Base
    1973 Chevrolet Nova Custom
    1974 Chevrolet Nova Custom
    1967 Pontiac Firebird 326
    1968 Pontiac Firebird 350
    1969 Pontiac Firebird 350
    1969 Pontiac Firebird 350 HO
    1967 Pontiac Firebird 400
    1968 Pontiac Firebird 400
    1969 Pontiac Firebird 400
    1967 Pontiac Firebird Base
    1967 Pontiac Firebird Base
    1967 Pontiac Firebird Base
    1968 Pontiac Firebird Base
    1968 Pontiac Firebird Base
    1968 Pontiac Firebird Base
    1969 Pontiac Firebird Base
    1969 Pontiac Firebird Base
    1969 Pontiac Firebird Base
    1970 Pontiac Firebird Base
    1970 Pontiac Firebird Base
    1970 Pontiac Firebird Base
    1971 Pontiac Firebird Base
    1971 Pontiac Firebird Base
    1971 Pontiac Firebird Base
    1971 Pontiac Firebird Base
    1972 Pontiac Firebird Base
    1972 Pontiac Firebird Base
    1972 Pontiac Firebird Base
    1972 Pontiac Firebird Base
    1973 Pontiac Firebird Base
    1973 Pontiac Firebird Base
    1973 Pontiac Firebird Base
    1973 Pontiac Firebird Base
    1974 Pontiac Firebird Base
    1974 Pontiac Firebird Base
    1974 Pontiac Firebird Base
    1974 Pontiac Firebird Base
    1975 Pontiac Firebird Base
    1975 Pontiac Firebird Base
    1975 Pontiac Firebird Base
    1976 Pontiac Firebird Base
    1976 Pontiac Firebird Base
    1976 Pontiac Firebird Base
    1977 Pontiac Firebird Base
    1977 Pontiac Firebird Base
    1977 Pontiac Firebird Base
    1977 Pontiac Firebird Base
    1977 Pontiac Firebird Base
    1978 Pontiac Firebird Base
    1978 Pontiac Firebird Base
    1978 Pontiac Firebird Base
    1979 Pontiac Firebird Base
    1979 Pontiac Firebird Base
    1979 Pontiac Firebird Base
    1979 Pontiac Firebird Base
    1980 Pontiac Firebird Base
    1980 Pontiac Firebird Base
    1980 Pontiac Firebird Base
    1980 Pontiac Firebird Base
    1981 Pontiac Firebird Base
    1981 Pontiac Firebird Base
    1981 Pontiac Firebird Base
    1981 Pontiac Firebird Base
    1970 Pontiac Firebird Esprit
    1970 Pontiac Firebird Esprit
    1970 Pontiac Firebird Esprit
    1971 Pontiac Firebird Esprit
    1971 Pontiac Firebird Esprit
    1971 Pontiac Firebird Esprit
    1971 Pontiac Firebird Esprit
    1972 Pontiac Firebird Esprit
    1972 Pontiac Firebird Esprit
    1972 Pontiac Firebird Esprit
    1972 Pontiac Firebird Esprit
    1973 Pontiac Firebird Esprit
    1973 Pontiac Firebird Esprit
    1973 Pontiac Firebird Esprit
    1973 Pontiac Firebird Esprit
    1974 Pontiac Firebird Esprit
    1974 Pontiac Firebird Esprit
    1974 Pontiac Firebird Esprit
    1974 Pontiac Firebird Esprit
    1975 Pontiac Firebird Esprit
    1975 Pontiac Firebird Esprit
    1976 Pontiac Firebird Esprit
    1976 Pontiac Firebird Esprit
    1976 Pontiac Firebird Esprit
    1977 Pontiac Firebird Esprit
    1977 Pontiac Firebird Esprit
    1977 Pontiac Firebird Esprit
    1977 Pontiac Firebird Esprit
    1978 Pontiac Firebird Esprit
    1978 Pontiac Firebird Esprit
    1978 Pontiac Firebird Esprit
    1979 Pontiac Firebird Esprit
    1979 Pontiac Firebird Esprit
    1979 Pontiac Firebird Esprit
    1979 Pontiac Firebird Esprit
    1980 Pontiac Firebird Esprit
    1980 Pontiac Firebird Esprit
    1980 Pontiac Firebird Esprit
    1980 Pontiac Firebird Esprit
    1981 Pontiac Firebird Esprit
    1981 Pontiac Firebird Esprit
    1981 Pontiac Firebird Esprit
    1981 Pontiac Firebird Esprit
    1970 Pontiac Firebird Formula
    1970 Pontiac Firebird Formula
    1971 Pontiac Firebird Formula
    1971 Pontiac Firebird Formula
    1971 Pontiac Firebird Formula
    1972 Pontiac Firebird Formula
    1972 Pontiac Firebird Formula
    1972 Pontiac Firebird Formula
    1973 Pontiac Firebird Formula
    1973 Pontiac Firebird Formula
    1973 Pontiac Firebird Formula
    1974 Pontiac Firebird Formula
    1974 Pontiac Firebird Formula
    1974 Pontiac Firebird Formula
    1975 Pontiac Firebird Formula
    1975 Pontiac Firebird Formula
    1976 Pontiac Firebird Formula
    1976 Pontiac Firebird Formula
    1977 Pontiac Firebird Formula
    1977 Pontiac Firebird Formula
    1977 Pontiac Firebird Formula
    1977 Pontiac Firebird Formula
    1978 Pontiac Firebird Formula
    1978 Pontiac Firebird Formula
    1978 Pontiac Firebird Formula
    1979 Pontiac Firebird Formula
    1979 Pontiac Firebird Formula
    1979 Pontiac Firebird Formula
    1979 Pontiac Firebird Formula
    1980 Pontiac Firebird Formula
    1980 Pontiac Firebird Formula
    1981 Pontiac Firebird Formula
    1981 Pontiac Firebird Formula
    1981 Pontiac Firebird Formula
    1981 Pontiac Firebird Formula
    1981 Pontiac Firebird Formula
    1967 Pontiac Firebird HO
    1967 Pontiac Firebird HO
    1968 Pontiac Firebird HO
    1967 Pontiac Firebird Sprint
    1968 Pontiac Firebird Sprint
    1969 Pontiac Firebird Sprint
    1969 Pontiac Firebird Trans Am
    1970 Pontiac Firebird Trans Am
    1970 Pontiac Firebird Trans Am
    1971 Pontiac Firebird Trans Am
    1971 Pontiac Firebird Trans Am
    1972 Pontiac Firebird Trans Am
    1972 Pontiac Firebird Trans Am
    1973 Pontiac Firebird Trans Am
    1973 Pontiac Firebird Trans Am
    1974 Pontiac Firebird Trans Am
    1974 Pontiac Firebird Trans Am
    1975 Pontiac Firebird Trans Am
    1975 Pontiac Firebird Trans Am
    1976 Pontiac Firebird Trans Am
    1976 Pontiac Firebird Trans Am
    1977 Pontiac Firebird Trans Am
    1978 Pontiac Firebird Trans Am
    1979 Pontiac Firebird Trans Am
    1979 Pontiac Firebird Trans Am
    1980 Pontiac Firebird Trans Am
    1980 Pontiac Firebird Trans Am
    1981 Pontiac Firebird Trans Am
    1981 Pontiac Firebird Trans Am
    1981 Pontiac Firebird Trans Am
    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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