Akrapovic 991 GT3 Exhaust: Titanium Tail Pipes (2014-2017)

The Akrapovic 991 GT3 exhaust story is, at its heart, a story about titanium. When you are working with one of the greatest naturally aspirated engines Porsche has ever built — the 3.8-litre 9A1 flat-six in the 991.1 GT3 (chassis 991, model years 2014–2017), spinning to a 9,000 rpm redline and making 469 horsepower at 8,250 rpm — every gram behind the rear axle matters, and so does every decibel. Akrapovic’s Titanium Tail Pipe Set is engineered specifically for this chassis and engine, replacing the heavy factory tips with hand-finished titanium that reduces weight, frees the exhaust note, and gives the GT3 the unmistakable Akrapovic signature. At NLP Performance, this is the upgrade we point 991.1 GT3 owners toward first.

What Akrapovic offers for the 991.1 GT3

Akrapovic builds its 911 GT3 catalog as a modular family. At the foundation sits the Slip-On Line, a titanium muffler that bolts to the original system without removing the headers. Above that sit the Slip-On Race Line and the full Evolution systems, which progressively replace link pipes and headers for owners chasing maximum flow on track. Running through every tier is one shared finishing component: the titanium tail pipes that the world sees and hears.

For the 2014–2017 991.1 GT3, the part we stock and recommend is the Akrapovic Titanium Tail Pipe Set. It is the visual and acoustic crown of the Akrapovic Slip-On layout for this chassis — the twin double-round outlets that turn an already special GT3 into something that announces itself the instant the flat-six fires. Because it is purpose-made for the 991 chassis, it drops into the GT3’s rear valance with the precise fitment Akrapovic is known for, no improvised brackets and no compromised exit angles.

The Akrapovic Titanium Tail Pipe Set for the 2014–2017 Porsche 911 GT3 (991).

The flagship: the Titanium Tail Pipe Set

Akrapovic’s tail pipes are not ornamental trim. They are formed from high-grade aerospace titanium alloy, with the most complex sections crafted in the company’s own titanium foundry — the same in-house metallurgy that lets Akrapovic supply factory exhausts to manufacturers and race teams worldwide. The result for the 991 GT3 is a pair of double-round outlets that are dramatically lighter than the cast and stamped factory hardware, finished to a depth of color and texture that only properly worked titanium delivers.

The design language is unmistakable on a 911. Twin double round tailpipes, roughly 100 mm in diameter, sit symmetrically in the diffuser and make it clear at a glance that this GT3 is wearing an Akrapovic system rather than the stock exit. The set is engineered to mate to the Akrapovic Slip-On muffler for this chassis, so it is best understood as the completion piece of that system rather than a standalone bolt-on — pairing the tail pipes with the matching Slip-On muffler is what unlocks both the full acoustic character and the full weight benefit.

Weight savings & materials

Titanium is the entire point. Across its slip-on titanium systems Akrapovic targets exhaust-system weight reductions on the order of 45 percent versus the stock stainless hardware, and that reduction lands in the worst possible place for a sports car: behind the engine and behind the rear axle. Trimming mass there lowers the polar moment of inertia and helps the 991.1 GT3 rotate and change direction more eagerly, which is exactly why Porsche’s own GT department fits titanium and lightweight components throughout the car.

Beyond the scale, titanium brings a higher strength-to-weight ratio and excellent heat tolerance, so the tail pipes hold their finish and structural integrity under the sustained thermal load a 9,000 rpm flat-six generates. Optional carbon-fiber and carbon-fiber/titanium tip treatments exist elsewhere in the Akrapovic range for owners who want an even more aggressive aesthetic, but the titanium set is the purist’s choice for the 991 GT3 — matched material from muffler to outlet.

Aerospace-grade titanium — the core of the Akrapovic 991 GT3 exhaust upgrade.

Sound & performance: what to expect

The 991.1 GT3’s 9A1 flat-six is one of the most vocal naturally aspirated engines on the road, and the Akrapovic system lets it breathe and sing the way it was always meant to. Owners describe a noticeably improved, more sporty exhaust note — cleaner and sharper up top, with the high-frequency intensity that only a 9,000 rpm engine produces — while still behaving on a cold start and at cruise. The Akrapovic acoustic signature is purpose-tuned, not simply louder; it adds richness and edge without devolving into drone on the highway.

On the performance side, the lighter titanium hardware and freer-flowing path reduce backpressure and shave mass exactly where the GT3 is most sensitive to it. Akrapovic is explicit that its slip-on titanium systems are designed to make the car both more powerful and lighter without replacing the entire exhaust. We do not publish unverified dyno figures — gains on a naturally aspirated platform like the 991.1 are modest and best felt as crispness and throttle response rather than a headline horsepower number — but the combination of less weight, less restriction, and a sharper voice is precisely what GT3 owners are chasing.

Hand-finished titanium double-round outlets, purpose-built for the 991 GT3.

Fitment: exact years, engine code, and variants

This Titanium Tail Pipe Set is engineered for the Porsche 911 GT3 (991 / 991.1), model years 2014–2017, powered by the naturally aspirated 3.8-litre 9A1 flat-six. That is the pre-facelift 991 generation GT3 with the high-revving 469 hp engine and 9,000 rpm ceiling — the car that famously moved Porsche’s GT flagship away from the older Mezger architecture to the all-new direct-injection 9A1 family while keeping the naturally aspirated, screaming-redline character intact.

Because the 991.1 GT3 of this era was produced before particulate-filter (OPF/GPF) requirements, it is a distinct fitment from the later 991.2 GT3 and GT3 RS systems. Always confirm your exact chassis and year before ordering: this set is matched to the 991.1 GT3 valance and exit geometry, and is not a universal-fit accessory. If you are unsure whether your car is a 991.1 or 991.2, the team at NLP Performance can verify it against your VIN.

Installation & what’s required

The tail pipe set is designed to integrate with the Akrapovic Slip-On muffler for the 991 GT3, so plan your build around the complete Slip-On layout rather than treating the tips as a standalone purchase — the full acoustic and weight benefit comes from running the Akrapovic muffler and titanium outlets together. Installation is a bolt-on job that does not require cutting or welding; the muffler mounts to the original system and the tail pipes finish the exit through the diffuser.

Depending on the exact configuration and whether the build is extended toward a Race Line or Evolution setup, Akrapovic may specify a factory Porsche mounting bracket and the correct slip-on or link components — details our team will spec for you so nothing is missed at install. We recommend professional fitment by a Porsche-experienced shop to ensure the outlets sit perfectly symmetrical in the valance, the way a GT3 deserves. As always, the Akrapovic system retains the factory mounting points, so the upgrade is fully reversible.

Bolt-on, reversible fitment matched to the 991 GT3 rear valance.

The product

Akrapovic

Akrapovic 14-17 Porsche 911 GT3 (991) Tail Pipe Set (Titanium)

$1,681.74

Part Number	akrTP-PO997GT3H
Fitment	2014–2017 Porsche 911 GT3 (991 / 991.1)
Warranty	Manufacturer warranty

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