Most Fabspeed products are built to order. Please allow 5–7 business days for production before your order ships. This timeframe does not include shipping transit time.

Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range.                                                                                  

FEATURES:

• Fits all Porsche 991 GT3 / GT3 RS vehicles 2014+
• Includes German-imported HJS 200-Cell Tri-Metallic Sportcats
• Optimized for maximum performance with NO catalyst generated check engine light, guaranteed
• Saves 2 lbs from the rear of the vehicle
• CNC mandrel-bent 1pc primary header tubes
• High-velocity motorsports-style merge collector
• Constructed from T304 Stainless Steel
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

INSTALLATION NOTE: To ensure proper header seal, after initial heat cycle, tighten all exhaust bolts to the OEM torque specs.

Why We Choose HJS Catalytic Converters: 

HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.    If you'd like to learn more, watch our video about HJS catalytic converters.

Sport Catalytic Converter (STREET) - 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 contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is 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.

Part number: FS.POR.991GT3.SHDR

All sales of Fabspeed products are final. These items are not eligible for return or exchange. Please verify compatibility and vehicle fitment before placing your order.