REMARK Exhaust

High Flow Catalytic Converter - Honda S2000

High Flow Catalytic Converter - Honda S2000 - Main image
$434.35 $595 In stock

Category: Honda Exhaust

Looking to increase the flow of your Honda S2000 exhaust system, a high flow catalytic can definitely help. Our metal substrate catalytic converter has undergone Federal testing and is EPA compliant. This is not an OEM replacement catalytic converter. This is a high flow 400 cell count converter designed for those seeking increased flow and reduced back pressure. The fitment mimics the OE catalytic converter, and will bolt to OE exhaust or aftermarket exhaust systems that fit with OE catalytic converter. One oxygen sensor bung is welded in similar position to OE. Screw in oxygen sensor extension bung included in each kit.

Constructed of 304 Stainless Steel for long lasting performance and durability. 


IMPORTANT - This product is not available for sale or shipping to California, Colorado, New York, and Maine. 



 *You will be using factory donut gasket and spring-bolts where connected to header/ exhaust manifold.

Part Number

RK-CT25H-05

Year/ Make /Model

2000-2009 Honda S2000 [AP1/ AP2]
    Exhaust Type  Direct Fit High Flow Catalytic Converter
    Piping Diameter 2.5"
    Piping Material  T304 stainless steel
    Catalytic Converter 400 Cell Count, Metal Core, 4.5" OD x 8" Overall Length 
    Welding Handcrafted high quality TIG welding
    Shipping Dims 24x9x9" , 11 lbs.

    ** Eligible for purchases direct from www.remark-usa.com
    ** Excludes taxes and duties on international orders
    ** No Returns or Exchanges accepted 
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    Express Shipping · United States: $3.99

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    United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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    Customer Reviews (4.6 / 5 · 5 reviews)

    Madison ★★★★★

    The metal substrate feels solid and the EPA compliance gave me peace of mind. Installed it last weekend and the S2000 feels noticeably more responsive through the mid-range.

    Michael ★★★★★

    Bolted this on my AP1 and the butt dyno noticed right away, especially past VTEC. The metal substrate is way more durable than the ceramic honeycomb that crumbled in my last cat, and it's nice knowing it's EPA compliant so I won't sweat inspection.

    Ruby ★★★★★

    Fitment was spot on for my S2000 and the metal substrate flows noticeably better than the stock unit. Passed my state emissions check without any CEL issues, which was my main worry.