
718 Boxster / Cayman Sport Cat with Downpipe (2017+)
FS.POR.718.SCDP
PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.
The Fabspeed Sport Cat with Downpipe is a great bolt-on modification for any 718 Turbo car. These Sport Cat with Downpipes feature German made HJS 200 cell EURO 6 EC certified compliant trimetallic catalytic converters. We use all mandrel bent T304L stainless steel 3 inch tubing that splits into 2 inch tubing from the cat to the rest of the exhaust. The cats are the largest and highest flowing catalytic converters you can fit on the 718. Larger catalytic converters are better because they allow for more exhaust flow and the increased catalysts surface area allows for better exhaust gas filtering which means emissions compliance and will NOT trigger a check engine light. Our Sport Cat Downpipes are a direct bolt-on replacement for the factory 718 catalytic converter and downpipe.
SOUND:
The Sport Cat with Downpipe adds more volume to the characteristic boxer engine rumble. No droning, and the activation of Sport mode greatly increases cracks and pops during shifting and overrun conditions. Expect a slight increase in turbo sound as well - which can be enhanced even further at any point with the separate addition of our Maxflo Exhaust System.
POWER:
Fabspeed's Sport Cat with Downpipe will add an estimated 20 whp. You can extract even more power with our hardware in conjunction with a Fabspeed ECU Tune.
FINISH:
T304L stainless steel, beautifully welded together and finished off with hand made single-wall stainless steel tips or premium matte carbon fiber shrouded tips.
FEATURES:
- Fits all Porsche 718 Boxster/Cayman Base/S Models 2017+ and GTS Models 2017-2020 Worldwide
- Improves power, sound, and throttle response by decreasing back pressure and increasing exhaust flow
- Simple bolt-on installation. Instructions included below
- The largest HJS German imported EURO 6 homolgated tri-metallic catalytic converter that will fit in the factory location
- Designed to fit Left hand drive and Right hand drive cars worldwide
- Significant performance gains across the RPM band. Estimated +20HP gained over the factory unit
- Even more power can be unleashed with a ECU tune.
- Optimized for maximum performance with NO catalyst generated check engine light, guaranteed
- Superior quality all German and USA components built in house by hand
- TIG welded by our expert welders
- 3 inch 76mm tubing for maximum flow into Dual 2 inch T304L stainless steel construction
- Fabspeed performance products are backed by Fabspeed's Lifetime Warranty
WHY YOUR SPORTSCAR MUST ONLY HAVE HJS GERMAN AUTOBAHN PROVEN Racing High Flow Catalytic Converters:
HJS Emission technology German imported EMITEC catalytic converters are made from the highest grade materials in the WORLD. There is simply no alternative Street, Autobahn and Race Proven catalytic converter that compares in the World.
HJS German proven catalytic converters offer the Worlds very best high performance power increases along with enhanced Sportscar sound and long term proven durability. Any and all other brands of catalytic converters simply and quickly degrade , lose power and give the car a Check Engine Light and or do not scrub the exhaust systems as well as the OEM catalytic converters.
HJS German EMITEC 200CPSI catalytic converters can flow up to 90-93% of a straight pipe in most applications. The benefit is that you get the "straight pipe exotic sound" while still being able to provide enough emissions scrubbing to prevent a check engine light. DO NOT ASSUME ALL CATALYTIC CONVERTERS ARE THE SAME or EVIL PErformance killers. HJS EMITEC catalytic converters are 100% Guaranteed to make more power than any Illegal cat-bypass pipes even on Turbocharged engines with aftermarket high performance turbos. If you'd like to learn more, watch our video about HJS German catalytic converters.
FABSPEED MOTORSPORT USA was appointed 20 years ago as HJS Emissions Technology Menden Germany as HJS Exclusive importer and distributor for all of North and South America. Therefore when you purchase HJS catalytic converters and or Fabspeed systems equipped with HJS catalytic converters the PURCHASER is 100% ASSURED that they have received Genuine certified high-performance HJS components imported directly from HJS Emitec Germany.
ONLY Fabspeed Motorsport can offer HJS German direct imported catalytic converters in the USA. Any other company offering HJS Equipped products SHOULD be QUESTIONED before purchase as to where they obtained HJS Catalytic converters. If they reply they did NOT buy HJS catalytic converters from Fabspeed Motorsports USA, HJS Exclusive importer , you can be assured that the HJS cats are either certainly counterfeit, Grey Market and or falsified and engraved HJS just like a fake ROLEX watch. Never Ever assume when you can go direct to Fabspeed or one of our buyers to obtain 100% Genuine HJS Emitec Certified Homologated high performance racing catalytic converters.
Fabspeed HJS German tri-metallic catalytic converters are State of the Art ultimate emission legal performance enhancing components. Your sports car , SUV and Truck equipped with HJS German catalytic converters is 100% Guaranteed to make more Horsepower, Torque, enhanced sports car, better fuel economy than any OEM stock catalytic converter and or ANY Illegal Cat Bypass pipe downtube. In fact, if you have any older cars, used cars and or cars with FAILING, DELETED or Butchered catalytic converters then do yourself a favor and UPGRADE your car with a set of Fabspeed HJS German high-flow trimetallic OBD2 European Certified Homologated catalytic converters. Its the Right thing to do to achieve CLEAN and GREEN Performance and leave absolutely nothing on the table for performance and sports car sound. Furthermore all the Air we breathe globally is not affected by using cat-bypass pipes or stupid solutions like Non Catted downtubes.
HJS German catalytic converters aka catalysts on a properly tuned and functioning engine and engine management systems offer guarantee NO CEL - NO Check Engine Lights. This is in direct comparison to NO NAME Cheap as dirt ASIAN Pacific Rim 100% guarantee to Fail catalytic converters and Cheap European and USA aftermarket catalytic converters . Do NOT even waste your time , money and energy evaluating any other brand of catalytic converters for your high-performance car.


718 Boxster / Cayman Sport Cat with Downpipe (2017+)
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FAQs
Please read our FAQs page to find out more.
How do I know if a part fits my car?
Every product page includes detailed fitment information covering model, year, and variant. If you’re unsure, reach out to our team with your VIN or vehicle details — we’ll confirm compatibility before you order. Our goal is to ensure every part fits the first time.
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How long does shipping take?
In-stock items typically ship within 2–3 business days. Lead times for made-to-order or imported parts vary by brand, and estimated delivery windows are listed on each product page. You’ll receive tracking as soon as your order ships!
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