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JCR Titanium Valved Race Rear Silencer for 982 Porsche 718 Cayman GT4 RS / Spyder RS - Front View of Rear Silencer

JCR Titanium Valved Race Rear Silencer for 982 Porsche 718 Cayman GT4 RS / Spyder RS - Front View of Rear Silencer

JCR Titanium Valved Race Exhaust System for 982 Porsche 718 Cayman GT4 RS / Spyder RS

Price range: $12,380.00 through $14,170.00

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The JCR Titanium Valved Race Exhaust System for the 982 Porsche 718 Cayman GT4 RS / Spyder RS eliminates the restrictive factory silencer, reduces weight, and enhances exhaust sound, delivering the iconic GT3 howl. This upgrade improves exhaust flow and performance, offering a true motorsport-inspired tone for the 9000rpm GT3-derived engine.

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SKU: N/A Categories: Exhaust, Exhaust Systems Vehicle: PORSCHE, Porsche 718 Cayman GT4 RS, Porsche 718 Spyder RS, Porsche Boxster, Porsche Cayman, Brand: JCR Developments

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Description

JCR Titanium Valved Race Exhaust System for 982 Porsche 718 Cayman GT4 RS / Spyder RS

The new 718 GT4 RS has garnered excellent reviews from both magazines and customers. Porsche has made significant efforts to enhance the sound compared to the 718 GT4, and the introduction of the new carbon airbox inside the cabin certainly amplifies the interior acoustics. However, the factory exhaust sound still leaves much to be desired. From the factory, the 718 GT4 RS is equipped with an adapted version of the 718 GT4 rear silencer. This silencer features a very small pipe diameter, which creates a considerable restriction for the 9000rpm GT3-derived engine found in this model. The JCR Titanium Valved Race Exhaust System not only eliminates this restrictive bottleneck within the exhaust system but also reduces weight and produces the iconic GT3 howl that enthusiasts expect.

Direct Replacement / Modular Fitment

The JCR Titanium Valved Race Exhaust System is a complete direct replacement for the OEM 718 GT4 RS rear silencer assembly. No fabrication is needed — simply remove the factory rear silencer and replace it with the JCR Valved Race Exhaust System, using the factory mounting points and exhaust valve vacuum lines. This system includes titanium tips secured with motorsport-grade v-band clamps, ensuring perfect alignment every time. The v-band clamps also allow for quick changes at the track, offering optional Titanium Silenced Tips that reduce sound levels by an additional 6-7dB. This ensures owners who plan to use their cars on the track will not face concerns regarding excessive noise levels during strict track events.

Light Weight

Thanks to the construction and material selection, JCR was able to meet all performance goals while reducing the weight of the OEM system by over 50%. This modification provides a clear performance benefit.

Performance Increase

Every component of the JCR Titanium Exhaust line is guaranteed to improve horsepower and torque, with results varying depending on the specific combination of parts. Specific horsepower gains will be shared in the coming weeks, but initial acceleration numbers before and after the upgrade are looking very promising.

Valved Design

The JCR Valved Race Exhaust System includes small diameter silencers in the valves-closed exhaust route, reducing volume when the valves are closed. Once the valves open, the sound becomes fully unrestricted. Valve function is controlled as per OEM specifications with the exhaust button, so no additional controllers are required.

JCR Tips

During the development of the 718 GT4 RS exhaust system, it became clear that retaining the factory Titanium Weissach tips would not be feasible while maximizing power gains due to their restrictive internal diameter. This led JCR to develop its own Titanium Weissach Tips, inspired by the factory tips found on all 718 GT4 RS models with the Weissach package. Additionally, JCR offers a more conventional Titanium Megaphone design. Both the Titanium Megaphone and Titanium Weissach tips are available with or without black coatings as an option.

GT3 Style Sound

The sound signature of the JCR Titanium Valved Race Exhaust System has been engineered to closely resemble the sound of JCR’s highly popular GT3 product line. Gone is the flat and dull exhaust note, replaced with a beautiful flat-six tone and an increased volume when requested. By utilizing the same merge design as JCR’s existing Race Exhaust System products, the GT3-derived 4.0L engine is allowed to truly howl at 9000rpm. This system retains factory valve control, ensuring zero drone during cruising while providing the ability to increase volume when the valves are open.

Features

Inconel 625 valve sections
Titanium center & titanium tips
Silenced exhaust path with valves closed or non-silenced exhaust path with valves closed
Direct replacement and quick installation
Emissions unaffected, no chance of engine lights
Optional modular exhaust tips:
- Megaphone (titanium — black coated or polished)
- Weissach (titanium — black coated or raw)
Retains OEM exhaust valve switching capabilities
OEM spec helical technologies titanium exhaust valves
11hp & 5tq increase
6.38kg weight saving vs OEM exhaust

Applications

Porsche 718 Cayman GT4 RS: 982 (2021-present) [4.0L F6 MDG]
Porsche 718 Spyder RS: 982 (2021-present) [4.0L F6 MDG]

More JCR Exhaust Products for 718 Cayman GT4 RS / Spyder RS

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.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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