JCR Valved Superlight Race Exhaust System & Manifold Assembly for 992 Porsche 911 GT3, GT3 RS, GT3 Touring, and S/T

JCR Valved Superlight Race Exhaust System & Manifold Assembly for 992 Porsche 911 GT3, GT3 RS, GT3 Touring, and S/T

The JCR Valved Superlight Race Exhaust System & Manifold Assembly for the 992 Porsche 911 GT3 series and S/T is an all-encompassing performance upgrade that replaces the entire OEM exhaust system. The system features a valved design that retains the factory valve control, allowing for a quieter sound at lower speeds and an aggressive, “RSR” tone at high RPMs. It is available in two configurations — with Race Silencers, for track-day compliance, or with Silencer Deletes, for maximum sound and weight reduction. Crafted from a combination of lightweight titanium and Inconel, the system significantly reduces weight — by up to 17.33kg — and delivers substantial gains in horsepower and torque, with up to 26hp and 36tq. The exhaust requires specific JCR tips to complete the system, with options including Titanium Race Megaphone (raw or black coated) or Inconel Race Rolled (polished or black coated) finishes.

Inconel Race Manifolds

• JCR’s Inconel Race Exhaust Manifolds are engineered for uncompromising performance using lightweight, heat-resistant Inconel 625. These manifolds provide sound control without restricting exhaust flow. By removing factory limitations, they deliver a sharper throttle response, enhanced mid-range torque, and a more aggressive, race-inspired sound.

Silencer Version

• Race Silencers: JCR’s Inconel Race Silencer features a high-flow 200-cell HJS core. As a result, flow is greatly increased, and improved performance follows. For cars with no OPF monitoring, JCR’s Race Silencers will in most cases not cause any CEL and do not require any tuning. In certain instances, it’s still possible for a CEL to occur. This tends to happen if the car has poor fuel quality or excess load is applied before the engine and exhaust system are up to full operating temperature. With this in mind, JCR does not guarantee that there is no chance of a CEL with these parts installed.
• Silencer Deletes: With JCR’s Inconel Silencer Delete, the factory restrictive assembly is removed entirely for maximum performance and sound.

Light Weight

• Through the use of lightweight materials and clever design, JCR has managed to significantly reduce the overall weight of the factory 992 exhaust components. While any weight reduction is beneficial in a performance vehicle, the gains are exaggerated on this platform, as reducing the rear-biased weight distribution helps to improve overall balance and handling. JCR’s most extreme exhaust solution for this platform drops over 21kg of weight from behind the rear axle, yielding real performance benefits on its own.

Direct Replacement

• All of JCR’s 992 Superlight Race Exhaust Systems are a 100% direct replacement for the OEM exhaust system. No further work is required during installation beyond removing the OEM part and replacing it with its JCR equivalent along with any supplied hardware.

Valved Design

• JCR’s valved version of the center section retains factory valve control through the exhaust button and / or mode switch, giving the driver the ability to quieten the car when cruising at lower speeds. When the valves open, the sound level is similar to JCR’s Non-Silenced system due to the lack of silencing in the open valve route. All of the JCR Superlight Race Exhaust Systems feature a tuned merge for an improved exhaust scavenging effect and a smoother, more pleasant tone.

OEM Valve Control

• The valved version of JCR’s Superlight Race Exhaust System retains the factory valve switching functionality for a more subtle sound while cruising and at lower speeds. Owners can simply replace the factory valve motor actuator onto the JCR valve section, and the exhaust will function as per OEM, with full control over the valve position via the exhaust button and mode switches.

RSR Sound

• At the top end of the rpm range, JCR’s Superlight Race Exhaust System configurations deliver the well-known “RSR” sound that enthusiasts love.

Testing Procedure

• As with all JCR products, JCR tests its products extensively prior to release.

Power Increase & Real World Performance Improvements

• Every component of the JCR Exhaust line is guaranteed to improve horsepower and torque, with the degree of improvement depending on the specific combination of parts. JCR’s Superlight Race Exhaust Systems will see gains up to 26hp and 36tq, along with significant improvements in engine response and mid-range punch. Optimizing the manifold design not only brings a hard-edged race car sound but also drastically improves flow, resulting in increased HP and TQ while reducing temperatures significantly during hard driving on the road or track. JCR found that the latest generation of normally aspirated OPF-equipped vehicles has a strong tendency to significantly reduce power output on longer runs due to excessive heat buildup. Along with outright improved performance comes much improved consistency and even larger performance gains on longer track sessions versus the OEM exhaust system.

Features

• Titanium center & inconel 625 valve sections
• Inconel 625 HJS 200-cell race silencers (race silencer version)
• Titanium silencer deletes (silencer delete version)
• Retains factory valve control
• Inconel race manifolds
• Choice of Titanium Race Megaphone or Inconel Race Rolled Tips (polished, raw or black coated options)
• 13.85kg maximum weight saving vs OEM exhaust (race silencer version)
• 17.33kg maximum weight saving vs OEM exhaust (silencer delete version)
• Improved sound quality
• 26hp & 36tq peak increase vs OEM exhaust

Applications

• Porsche 911 GT3: 992.1, 992.2 (2021-present) [4.0L F6]
• Porsche 911 GT3 RS: 992.1 (2022-2024) [4.0L F6]
• Porsche 911 GT3 Touring: 992.1, 992.2 (2021-present) [4.0L F6]
• Porsche 911 S/T: 992.1 (2023-2024) [4.0L F6]

More JCR Exhaust Products for 992 GT3, GT3 RS, GT3 Touring, and S/T

• Titanium Valved Race Exhaust System
• Titanium Non-Valved Race Exhaust System
• Inconel Race Exhaust Manifolds
• Titanium Race Megaphone Exhaust Tips
• Titanium Race Cup Exhaust Tips
• Inconel Race Rolled Exhaust Tips
• Titanium Silenced Exhaust Tips
• Titanium OEM-Replacement Megaphone Exhaust Tips
• Titanium & Inconel OEM-Replacement Rolled Exhaust Tips
• Titanium OEM-Replacement Silenced Exhaust Tips
• Exhaust Valve Delete Kit
• Non-Valved Superlight Race Exhaust System & Manifold Assembly

Notes

• EU specification cars with OPF monitoring may require an ECU tune to avoid CEL

About JCR Developments

JCR Developments is an engineering-led performance brand specializing in high-end exhaust and motorsport-derived upgrade solutions for marquee supercars and enthusiast platforms. Known for its expertise in advanced materials such as Inconel and lightweight stainless alloys, JCR focuses on reducing mass, improving thermal efficiency, and unlocking authentic, emotionally engaging sound without compromising drivability or OEM systems integration. Each component is designed through data-driven development, track-informed testing, and precision fabrication, resulting in products that deliver measurable performance gains alongside elevated craftsmanship. Serving discerning drivers, collectors, and professional build shops worldwide, JCR Developments combines technical rigor with boutique-level customer support to enhance the character, capability, and long-term enjoyment of iconic vehicles.