JCR Titanium Side Silencer Bypass Sections for 997 / 991 Porsche 911 GT3, GT3 RS, GT3 RS 4.0, GT3 Touring, and R

JCR Titanium Side Silencer Bypass Sections for 997 / 991 Porsche 911 GT3, GT3 RS, GT3 RS 4.0, GT3 Touring, and R

The JCR Titanium Side Silencer Bypass Sections for 997 / 991 Porsche 911 GT3, GT3 RS, GT3 RS 4.0, GT3 Touring, and R provide a precision-engineered, lightweight upgrade designed to replace the factory side silencers. Crafted entirely from high-grade titanium, these sections deliver substantial weight savings while improving exhaust flow and sharpening throttle response. Offered in both Valved and Non-Valved configurations, the system allows owners to tailor sound levels and backpressure to their preference, whether aiming for maximum volume and performance or maintaining a more versatile setup. The modular v-band design ensures quick installation and easy interchangeability between configurations, making it ideal for both street and track applications.

Light Weight

• Due to their 100% titanium construction, JCR’s Side Silencer Bypass products achieve a significant weight reduction at the rear of the vehicle. Any reduction in weight is beneficial, but decreasing mass behind the 911’s rear axle can greatly improve handling balance, making this a true performance gain. Weighing over 17.48kg (38.54lbs) less than the OEM side silencers, these are the lightest options available.

Valve or not to valve?

• JCR offers multiple configurations for the Titanium Side Silencer Bypass, with both Valved and Non-Valved versions available.
  • JCR Titanium Valved Side Silencer Bypass: The Valved version combines a full titanium main body with a precision-engineered titanium valve section, adding only a minimal weight increase compared to the Non-Valved option.
  • JCR Titanium Non-Valved Side Silenced Bypass: The Non-Valved version features a 100% titanium build with a V-banded titanium section, referred to by JCR as the Titanium Valve Delete Section.

Upgradability

• The modular design of the Side Silencer Bypass allows owners to convert a non-valved version to a valved configuration by adding the Titanium Valve Section. Likewise, a valved version can be converted to non-valved by installing the Titanium Valve Delete Section. This approach provides flexibility, enabling configuration changes quickly and cost-effectively without replacing the entire assembly.

OEM Style Twin Entry

• Unlike many aftermarket side silencer replacements, which block the uppermost entry point of the OEM center silencer and direct all exhaust gases through the lower section, JCR retains the OEM-style twin entry design. This prevents unwanted pressure differentials that can lead to reduced silencer lifespan or cracking, ensuring both reliability and performance are maintained.

Features

• 100% titanium construction main body
• OEM spec helical technologies titanium exhaust valves (valved version only)
• 100% titanium constriction valve delete section (non-valved version only)
• Weight reduction -17.80kg / 39.24lbs VS OEM (valved version)
• Weight reduction -18.52kg / 40.83lbs VS OEM (non-valved version)
• OEM style twin entry design
• Improved sound quality
• Horsepower & torque Increase

Applications

• Porsche 911 GT3: 997.1, 997.2, 991.1, 991.2 (2006-2008, 2010-2015, 2017-2019) [3.6L F6, 3.8L F6, 4.0L F6]
• Porsche 911 GT3 RS: 997.1, 997.2, 991.1, 991.2 (2006-2008, 2010-2012, 2015-2016, 2018-2019) [3.6L F6, 3.8L F6, 4.0L F6]
• Porsche 911 GT3 RS 4.0: 997.2 (2011) [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 997 / 991 Porsche 911 GT3, GT3 RS, GT3 RS 4.0, 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 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)
• Inconel Race Exhaust Manifolds (991 GT3, GT3 RS, GT3 Touring, 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.