JCR Inconel Race Exhaust Manifolds for 991 Porsche 911 GT3, GT3 RS, GT3 Touring, and R

JCR Inconel Race Exhaust Manifolds for 991 Porsche 911 GT3, GT3 RS, GT3 Touring, and R

The JCR Inconel Race Exhaust Manifolds for the 991 Porsche 911 GT3, GT3 RS, GT3 Touring, and 911 R are engineered to deliver maximum performance and durability in a lightweight package. Constructed from motorsport-grade Inconel, these manifolds significantly reduce weight behind the rear axle, improving handling and balance. Precision-tuned for optimal exhaust flow, they produce substantial horsepower and torque gains while enhancing the car’s exhaust note with a sharper, more aggressive tone. Designed as a direct OEM replacement, they offer perfect fitment and seamless integration with factory or aftermarket exhaust systems, making them ideal for both track and road applications.

Light Weight

• JCR’s Inconel Race Exhaust Manifolds, constructed entirely from 100% Inconel, deliver a significant reduction in rear-end weight. While any weight savings are beneficial, removing weight behind the 911’s rear axle offers substantial improvements to handling balance, making this upgrade a true performance advantage.

Direct Replacement

• The JCR Inconel Race Exhaust Manifolds are designed as a direct OEM replacement, ensuring full compatibility with the factory side silencers.

Power Increase

• Every product within the JCR Exhaust range is engineered to enhance horsepower and torque, with gains varying depending on the combination of components. The most extreme free-flowing system can achieve increases in the mid-30HP range, alongside notable improvements in engine response and mid-range torque. Eliminating the restrictive factory catalysts not only delivers a sharp, motorsport-inspired exhaust note but also significantly improves flow for measurable performance gains.

Features

• 100% inconel construction
• Direct replacement for OEM manifolds
• 2.65kg (5.84lbs) weight reduction vs OEM
• 30.90whp peak gain
• 25.55wtq peak gain
• Improved sound quality
• Sold as a pair

Applications

• Porsche 911 GT3: 991.1, 991.2 (2013-2015, 2017-2019) [3.8L F6, 4.0L F6]
• Porsche 911 GT3 RS: 991.1, 991.2 (2015-2016, 2018-2019) [4.0L F6]
• Porsche 911 GT3 Touring: 991.2 (2017-2019) [4.0L F6]
• Porsche 911 R: 991.1 (2016) [4.0L F6]

More JCR Exhaust Products for 991 Porsche 911 GT3, GT3 RS, GT3 Touring, and R

• Titanium Valved Race Exhaust System
• Titanium Non-Valved & Silenced Superlight Race Exhaust System
• Titanium Non-Valved & Non-Silenced Superlight Race Exhaust System
• Titanium Non-Valved Race Exhaust Kit
• Titanium Superlight Race Silencer Sections
• Titanium Superlight Race Silencer Bypass Set
• Titanium Superlight Center Bypass Section
• Titanium Silenced Center Bypass Section
• Titanium Non-Silenced Center Bypass Section
• Titanium Valved Side Silencer Bypass Sections
• Titanium Non-Valved Side Silencer Bypass Sections
• Titanium Side Silencer Bypass Valve Sections
• Titanium Side Silencer Bypass Valve Delete Sections
• Titanium Silenced Exhaust Tips
• 90mm Titanium Megaphone Exhaust Tips (997 / 991 GT3, GT3 RS, and GT3 RS 4.0)
• 102mm Titanium Megaphone Exhaust Tips (991 GT3, GT3 RS, and R)
• Titanium Straight Exhaust Tips (997 / 991 GT3, GT3 RS, and GT3 RS 4.0)
• Titanium Superlight Megaphone Exhaust Tips (991 GT3, GT3 RS, and R)
• Inconel Rolled Exhaust Tips (991 Porsche 911 GT3 / GT3 RS, and R)

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.