Descriptions:
This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles. Purchasing this product requires you to sign our Vehicle Compliance Waiver Here.
The Fabspeed Cat Bypass Pipe with Downpipe is a great bolt-on modification for any 718 Turbo owner who wants the most aggressive sound and performance. We use all mandrel bent T304L stainless steel 3 inch tubing that splits into 2 inch tubing. This greatly increases flow while maintaining proper exhaust gas velocity.. Our Cat Bypass Pipe with Downpipe are a direct bolt-on replacement for the factory 718 catalytic converter and downpipe.
Sound:
The Cat Bypass Pipe with Downpipe adds a lot more volume to the characteristic boxer engine rumble. Expect cracks and burbles during shifting and deceleration, especially when in sport mode.. Expect a significant 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 Cat Bypass Pipe with Downpipe will add an estimated 25 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+)
- Improves power, sound, and throttle response by decreasing back pressure and increasing exhaust flow
- Simple bolt-on installation. Instructions included below
- Designed to fit Left hand drive and Right hand drive cars worldwide Significant performance gains across the RPM band. Estimated +25HP gained over the factory unit
- Even more power can be unleashed with a ECU tune.
- 100% INTENDED for RACING COMPETITION events ONLY. Never ever to be driven or used on the public roads under any circumstances. NOT CARB approved NOT EPA approved and never will be approved. Caveat Emptor.
- Optional O2 spacers available to help minimize Check Engine Light occurrences
- Superior quality USA components built in house by hand
- TIG welded by our expert welders
- 3 inch T304L stainless steel construction
- Fabspeed performance products are backed by Fabspeed's Lifetime Warranty
Vehicle Fitment Chart:
| MAKE |
MODEL / SUB MODEL |
CHASSIS |
YEAR |
PORSCHE
|
718 Boxster
|
982
|
2017-2021
|
| PORSCHE |
718 Cayman |
982
|
2017-2021 |
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
- 100% INTENDED for RACING COMPETITION events ONLY. Never ever to be driven or used on the public roads under any circumstances. NOT CARB approved NOT EPA approved and never will be approved. Caveat Emptor.
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
The AutoHouse Advantage: Global sourcing power paired with specialized expertise. We utilize an expansive supply network of over 600,000 SKUs to deliver world-class components with an enthusiast’s precision.
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Price Match Guarantee:
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We are committed to providing the best value. If you find a lower advertised price from a verified vendor, we will match it. Shop with confidence knowing you’re getting the industry's lowest price.
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Project Incentives:
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
• AH25 — $25 OFF $500+ | • AH60 — $60 OFF $1000+
• AH180 — $180 OFF $3000+ | • AH400 — $400 OFF $6000+
• AH630 — $630 OFF $9000+
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Fitment Guarantee:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Authorized Retailer:
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Every product we sell carries its full original manufacturer’s warranty. While warranties are serviced by the brands themselves, we act as your advocate—handling technical details to ensure your claim is processed fairly.
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Leveraging our massive supply chain, we secure hard-to-find components that other shops can't access. Whether it's a standard upgrade or a custom exotic application, we have the network to get it to your door.
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Building something big? If you’re planning a full overhaul or need a custom quote, reach out to our team via our
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Precision Support: Whether you are dialing in a daily driver or sourcing components for a high-performance exotic, our team is here to ensure your project stays on track. Use the channels below for sales, technical assistance, or order updates.
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Direct Consultation:
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For sales inquiries, help applying Project Incentives, or immediate assistance with a new order:
(828) 588-5888
Monday – Friday | 9am – 5pm EST
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Technical & Fitment:
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To qualify for our Fitment Guarantee, please email your vehicle’s Year, Make, Model, and any existing modifications to:
support@autohousesupply.com
Our experts will review your specifications and provide written confirmation for your build.
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For tracking updates or status inquiries on existing orders, please reach out via our Contact Form. Having your order number ready will allow us to provide the most efficient update.
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Global Inquiries:
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We proudly support builds across the US, Canada, Mexico, and worldwide. For international shipping quotes or oversized freight logistics, please contact us via the email link above.
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Secure Shipping:
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We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
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Transit Protection:
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Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
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Flexible Returns:
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Exclusions:
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To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Need assistance? Reach out via our
Contact Form before shipping any items back so we can provide you with an RMA number.
Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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Verify Your Build:
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If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
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Our Promise:
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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Questions? Send us your
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