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    Exhaust Manifold for Honda K20 K24 Swap Tri-Y Racing Header ...
    A Honda K20/K24 swap Tri-Y header is a performance exhaust manifold designed for engine swaps, combining K20 and K24 components (like the longer K24 block with a K20 head/intake) for broad power gains, typically featuring a 4-2-1 design for better scavenging, better ground clearance with offset collectors, and often sold by brands like JackSpania Racing, 1320 Performance, and PLM (Private Label Mfg) for classic Honda chassis (EG, EK, DC2) to maximize low-to-mid-range torque and horsepower, often with a 3-inch collector and V-band. 
    Key Features & Benefits 
    • 4-2-1 Tri-Y Design: Balances low-end torque with top-end power by merging pipes in stages, improving exhaust gas scavenging.
    • Long Tube/Stepped Design: Utilizes the K20/K24 stroke differences for better torque.
    • Ground Clearance: Often features offset collectors or staggered pipes to fit swapped chassis (like older Civics/Integras) with Hasport mounts.
    • Material & Construction: Typically 304 stainless steel, CNC machined flanges, hand TIG welded for durability.
    • High-Flow Collectors: Can include large 2.5" or 3" collectors with V-band flanges for high-flow exhaust systems.
    • Power Gains: Aim for significant horsepower and torque increases, especially in the mid-range. 
    This video shows an example of a Tri-Y header being installed on a K24 swapped Civic:
    Related video thumbnail
    59s
    Texas Honda Channel
    YouTube • Jan 28, 2023
    Common Brands 
    • JackSpania Racing: Offers 4-1 (megaphone) and 4-2-1 Tri-Y headers with unique features like offset collectors and V-bands.
    • 1320 Performance: Known for affordable K-swap Tri-Y headers with large collectors and high-flow designs.
    • PLM (Private Label Mfg): Provides RB (staggered) 4-2-1 headers for better clearance and other variations for different K-series engines.
    • DC Sports: Offers high-quality 4-2-1 headers designed for optimal scavenging and fitment. 
    Usage
    These headers are essential for K-series swaps into older Honda/Acura chassis (like EG, EK, DC2) using aftermarket mounts, providing the necessary clearance and flow to make the engine perform well, especially in drag racing or general performance applications. 
    • K swap Tri-Y Race 3" header K20 K24 - 1320 Performance
      $499.00. $425.00 In Stock. 4 interest-free installments, or from $38.36/mo with. CODE: K swap Tri-Y header-3. Categories: Exhaust ...
      1320 Performance
    • 3" K Series K20 K24 Drag Header 4-2-1 Tri-Y EK EG Honda ...
      CNC machined flange, 3/8" thick. Long Tube Design (4-2-1) High Flow Tri-Y Merge Collector. Ported Primary Flange For Maximum Flow.
      JackSpania Racing
    • K Swap K20 K24 Megaphone Exhaust Header 2 Bolt 4-1 Tri-Y EK ...
      K Swap K20 K24 Megaphone 4-1 Tri-Y EK EG Honda Acura DC2 Civic 2 Bolt * CNC machined flange, 3/8" thick. * Long Tube Design (4-1) ...
      JackSpania Racing
    Show all
    • K swap Tri-Y Race 3" header K20 K24 - 1320 Performance
      $499.00. $425.00 In Stock. 4 interest-free installments, or from $38.36/mo with. CODE: K swap Tri-Y header-3. Categories: Exhaust ...
      1320 Performance
    • K Swap K20 K24 Megaphone Exhaust Header 2 Bolt 4-1 Tri-Y EK ...
      K Swap K20 K24 Megaphone 4-1 Tri-Y EK EG Honda Acura DC2 Civic 2 Bolt * CNC machined flange, 3/8" thick. * Long Tube Design (4-1) ...
      JackSpania Racing
    • PLM Power Driven Tri Y RB Header 4-2-1 For Honda Acura K ...
      PLM Power Driven Tri Y RB Header 4-2-1 For Honda Acura K Series K20 K24 K Swaps. SKU: PLM-HK20-RB-HEADER. $450.00. Default Title -
      IPGparts
    • 3" K Series K20 K24 Drag Header 4-2-1 Tri-Y EK EG Honda ...
      CNC machined flange, 3/8" thick. Long Tube Design (4-2-1) High Flow Tri-Y Merge Collector. Ported Primary Flange For Maximum Flow.
      JackSpania Racing
    • PLM Power Driven K Swap 4-2-1 Tri-Y Header For Honda ... - IPGparts
      PLM Power Driven K Swap 4-2-1 Tri-Y Header For Honda Acura K Series K20 K24 K Swaps. ... This is it! The best value, best performi...
      IPGparts
    • DC Sports K Swap 4-2-1 Header - Hybrid Racing
      Sep 29, 2025 — The equal-length 4-2-1 layout mirrors Honda's original engine design, pairing cylinders 1-4 and 2-3 to match the 1-3-4...
      Hybrid Racing
    • JDM K-SERIES HONDA-TRI Y VS 4:1 HEADERS & STACK ...
      Nov 10, 2020 — anything at the top it produced a lot more in the middle. lost nothing at the top. and in fact was down slightly at on...
      YouTube·Richard Holdener
      5m
    • Big Tube K swap header K20 K24 - 1320 Performance
      INSTALLATION TIP: IF YOU HAVE A ACCESS TO A LIFT YOU CAN MOST LIKELY INSTALL THE HEADER IN 1 PIECE CONFIGURATION WHICH IS MUCH EAS...
      1320 Performance
    • K-Series Headers - Aftermarket Headers - Private Label Mfg
      $625.00 $495.00. Pre-order Pre-Order now and we'll ship soon. Learn more here. PLM Power Driven K-Series K24 K20 Header Civic Si F...
      Private Label Mfg
    • K Series K20 K24 K Swap Megaphone 4-1 Collector Merger 3
      K Series K20 K24 K Swap Megaphone Merger 3" Vband EG EK Tri-Y Pipe DC CRX EF Si. This K Swap 4-1 Megaphone Merge Collector with V-
      JackSpania Racing
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    Videos
    JDM K-SERIES HONDA-TRI Y VS 4:1 HEADERS & STACK ...
    YouTube · Richard Holdener
    Nov 11, 2020
    YouTube · Richard Holdener
    10:38
    Test different bolt-on modifications for a K24A2 engine, including headers, intake manifolds, and stack injection, to see which provides the most power gains.
    Richard Holdener
    YouTube·
    Nov 11, 2020

    JDM K-SERIES HONDA-TRI Y VS 4:1 HEADERS & STACK ...

    YouTube·Richard Holdener·Nov 11, 2020
    YouTube
    In this video
    • 00:16
      Video Overview
    • 05:22
      Dyno results
    • 07:09
      Skunk2 Intake vs OEM
    • 09:06
      Stack Injection Results
    • 09:46
      Final thoughts
    • 10:13
      Intake manifolds
    WHICH IS BETTER FOR - HONDA K SERIES
    YouTube · the_JDM_fanatic
    Mar 6, 2023
    YouTube · the_JDM_fanatic
    15:26
    The exhaust has done something so as you can see it idles at 1300 I thought it was going to be a little bit higher but I'm assuming it needs a little bit of
    the_JDM_fanatic
    YouTube·
    Mar 6, 2023

    WHICH IS BETTER FOR - HONDA K SERIES

    YouTube·the_JDM_fanatic·Mar 6, 2023
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    Cheapest Ebay K20 K24 Tri-Y Header - Going into my K24 ...
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    Oct 5, 2020
    YouTube · Joshua McMillin
    3:22
    DNA Motoring K20/K24 header review: cheap ($200), good welds, but poor port matching.
    Joshua McMillin
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    Oct 5, 2020

    Cheapest Ebay K20 K24 Tri-Y Header - Going into my K24 ...

    YouTube·Joshua McMillin·Oct 5, 2020
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    3" K Series K20 K24 Drag Header 4-2-1 Tri-Y EK ...


    JackSpania Racing
    https://jackspaniaracing.shop › products › 3-k-series-k20...
    JackSpania Racing
    https://jackspaniaracing.shop › products › 3-k-series-k20...
    Fitment: K-Series Engine Swap for Honda Civic EG / EK / DC. CNC machined flange, 3/8" thick; Long Tube Design (4-2-1); High Flow Tri-Y Merge Collector ...Read more
    Honda K20 K24 Swap Tri-Y Racing from jackspaniaracing.shop
    $375.00 to $425.00 · In stock · 5.0(5) · Free delivery · 30-day returns

    K swap Tri-Y Race 3" header K20 K24


    1320 Performance
    https://1320performance.com › products › k-swap-tri-y-r...
    1320 Performance
    https://1320performance.com › products › k-swap-tri-y-r...
    Fitment: K-Series Engine Swap for EG EK DC2 USING HASPORT MOUNTS & Pre 1965 Classic cars with k20 k24 engine. Power gain: approximate 15-27 hp.Read more
    Honda K20 K24 Swap Tri-Y Racing from 1320performance.com
    Missing: Honda ‎| Show results with: Honda
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    PLM Power Driven Tri Y RB Header 4-2-1 For Honda ...


    IPGparts
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    IPGparts
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    Hybrid Racing
    https://www.hybrid-racing.com › Categories › Products
    Sep 30, 2025 — Engineered to fit 1992-2000 Honda Civics, 1993-1997 Honda Del Sol, and 1994-2001 Acura Integras, this header is compatible with both K20 and K24 ...Read more
    Honda K20 K24 Swap Tri-Y Racing from www.hybrid-racing.com
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    Exhaust manifold for K20 K24 Swap Tri-Y Racing Header


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    jagrowtuning.com
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    K-Series Headers - Aftermarket Headers


    Private Label Mfg
    https://privatelabelmfg.com › collections › k-series-headers
    Private Label Mfg
    https://privatelabelmfg.com › collections › k-series-headers
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    365 BADGE

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    HARDmotion
    https://hardmotion.com › Shop by Brand › PLM
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    K Series K Swap Tri-Y Header


    Burton-Racing
    https://www.burton-racing.com › products › k-series-k-...
    Burton-Racing
    https://www.burton-racing.com › products › k-series-k-...
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