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Hooker Headers 16521 - Hooker Headers Competition Dual Exhaust Kits



Hooker Headers 16521 - Hooker Headers Competition Dual Exhaust Kits
Representative Image
Product images may differ from actual product appearance.

Part Number: 520-16521

Competition Exhaust System
  • Header Back
  • 1963-82 Corvette w/Small Block Chevy 265-400 Engine
  • $194.95
    Ships
    Made In USA
    FREE Shipping

    Hooker Headers 16521 - Hooker Headers Competition Dual Exhaust Kits Details

    Chevy/GM - Car

    Notes:
  • Will not fit turbo 400 applications
  • This dual exhaust system was designed to be used with Hooker Competition Headers - 520-2456. If the dual exhaust is being installed with any other headers modifications will be required. Hooker will not assume responsibility for fit or performance.
  • All systems come without mufflers. Hooker recommends using the following mufflers with a 2.25" offset inlet/center outlet configuration:
    Aero Chamber - 520-21501
    Maximum Flow - 520-21601
    Competition Turbo - 520-21005

  • Specifications:

    Inlet Size (in.)
    2.25
    Outlet Size (in.)
    2.25
    Material
    Stainless Steel
    Exit Position
    Dual Split Rear
    Exhaust Type
    Dual
    Exit Style
    Straight
    Tip Size
    NA
    Hardware Included
    Yes
    Tip Included
    No
    Exit Location
    Split Rear
    Exit Quantity
    Two
    Muffler Included
    No
    Inlet Quantity
    Two
    Intermediate Pipe Diameter (in.)
    2.25
    Quantity
    Sold as a kit
    System Finish
    Aluminized
    System Material
    Steel
    Tailpipe Diameter (in.)
    2.25
    System Style
    Header-back
    Manufacturer's Part Number:
    16521HKR

    Hooker Headers Competition Dual Exhaust Kits are designed to fit specific applications using Hooker Competition Headers or stock exhaust manifolds. They have 2.25" diameter 16-gauge aluminized steel tubing that's mandrel bent to maintain a consistent inside diameter for maximum flow (press bending crushes the pipe, which can reduce volume by more than 10%).

    Features
  • Reducer Flex-Tubes
  • Reduces Backpressure
  • Improves Engine Efficiency
  • Hardware and Instructions Included

    Notes
  • The original equipment tailpipe exit location is retained on most systems unless otherwise noted below in More Info
  • For racing use only (not legal for use on vehicles originally equipped with catalytic converters)
  • Except the universal kit, systems do not include mufflers. Hooker recommends using Aero Chamber, Maximum Flow, or Competition Turbo mufflers with a 2.25" offset inlet/center outlet configuration.

  • Does this fit your vehicle?

    Narrow Results

    1963-1965 CHEVROLET CORVETTE

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1974 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1968 CHEVROLET CORVETTE

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1975-1976 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: STINGRAY
    • CUI: 350
    • EngineType: V8

    1974 CHEVROLET CORVETTE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8

    1977-1979 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: ALL

    1974 CHEVROLET CORVETTE

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1972 CHEVROLET CORVETTE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1974 CHEVROLET CORVETTE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CORVETTE

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1982 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1963-1965 CHEVROLET CORVETTE

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1982 CHEVROLET CORVETTE

    • EngineType: ALL
    • SubModel: COLLECTOR'S EDITION

    1980 CHEVROLET CORVETTE

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1969-1971 CHEVROLET CORVETTE

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1969-1972 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CORVETTE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8

    1966-1968 CHEVROLET CORVETTE

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1980-1981 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8
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