Phoenyx Design Racing Downpipes No Cat, No Tune (20222025 Porsche 718 Cayman GT4 RS)
Catless Racing Downpipes for Porsche 718 Cayman GT4 RS
The Phoenyx Design Racing Downpipes are engineered to unlock uncompromised exhaust flow and aggressive performance from the Porsche 718 Cayman GT4 RS. Designed specifically for high-RPM, track-focused applications, these catless downpipes eliminate factory exhaust restrictions to deliver sharper throttle response and noticeable gains in horsepower and torque.
Constructed from 100% high-quality T304 stainless steel, each downpipe features precision TIG welds and an integrated heat-stamped heat shield to handle extreme exhaust temperatures generated during hard driving and sustained track use. This motorsport-grade construction ensures durability, reliability, and consistent performance.
This system is offered as a no-tune racing solution and is 100% reversible, allowing the vehicle to be returned to stock at any time. All required mounting hardware is included for a direct installation. For vehicles experiencing fault codes due to catalytic converter removal, racing software may be recommended.
Performance Features
- Catless racing downpipe design for maximum exhaust flow
- Improved horsepower, torque, and throttle response
- Optimized for high-RPM track performance
- Manufactured from T304 stainless steel
- Precision TIG welded for strength and longevity
- Heat-stamped heat shield for thermal protection
- Includes all necessary mounting hardware
- Fully reversible return to factory configuration if desired
Quick Specs
- Application: Porsche 718 Cayman GT4 RS
- Model Years: 20222025
- Design: Catless racing downpipes
- Material: T304 stainless steel
- Welding: Precision TIG welds
- Heat Protection: Integrated heat-stamped heat shield
- Includes: All required mounting hardware
Emissions & Legal Notice
Emissions Non-Compliance Notice: Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. Its use is prohibited in any motor vehicle subject to emissions inspection or control.
This product is legal in California only for racing vehicles that may never be used, registered, or licensed for highway operation.
Disclaimer: This product removes the OEM catalytic converters and is strictly intended for closed-course track events and off-road use only. It should never be driven on public roads. This product is or contains a racing cat bypass pipe and will trigger check engine lights on OBD-II vehicles. Racing software is recommended to prevent fault codes and warning lights. These components are not CARB certified and not EPA certified. All installation and usage risk is assumed by the end user and installer. Always verify local, state, and federal regulations before purchasing or installing aftermarket exhaust components.
Fitment
- 2022 Porsche 718 Cayman GT4 RS
- 2023 Porsche 718 Cayman GT4 RS
- 2024 Porsche 718 Cayman GT4 RS
- 2025 Porsche 718 Cayman GT4 RS
Frequently Asked Questions
Do these downpipes require a tune?
These downpipes are sold as a no-tune racing solution; however, due to catalytic converter removal, racing software may still be recommended to manage fault codes.
Are these downpipes legal for street use?
No. These downpipes are intended strictly for off-road, track, and competition use and are not legal for use on public roads or emissions-controlled vehicles.
Why Buy from Beefcake Racing?
Beefcake Racing provides expert guidance, fast shipping, and trusted support for serious Porsche performance builds. If you have questions about GT4 RS exhaust upgrades or race-only components, contact sales@beefcakeracing.com or call 1-855-827-7223.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
