2018 Porsche 911 991 GT3 Coupe H6 4.0L
Increase power by containing exhaust heat - Black
Secure the exhaust wrap with stainless steel ties
Lifetime Replacement
Max gains of +33-69 WHP and +37-52 WFT-LBS depending on octane
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This upgrade must be performed at ECS Tuning's facility in Ohio.
Lifetime Replacement
Boost sound and performance with this center muffler delete, featuring dual tuned Helmholtz resonators, 304 stainless steel construction, and 100% TIG-welded strength in a direct bolt-on design.
This product was last offered at the strikethrough price on
05-28-2026
Lifetime Replacement
For those who want to increase tone, free up some power while dropping weight, but prefer to keep their factory side mufflers.
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Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range. Fits all Porsche 991 GT3 Cup vehicles 2017+
Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Polished Titanium Finish.
Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Brushed Titanium Finish.
Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Cerakote Black Finish.
Made from 100% 304L aircraft grade stainless steel! Uses your factory tips.
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Increase of +22 Horsepower, and +10 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This software is only compatible with Windows PC / Laptop.
Lifetime Replacement
Increase of +30 Horsepower, and +20 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts!
This software is only compatible with Windows PC / Laptop.
Lifetime Replacement
Quick connect union T-fitting for 1/4" Nylon
Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance.
This product was last offered at the strikethrough price on
05-27-2026
Lifetime Replacement
