Porsche 911 GT3 & GT3 RS Slip-On Race Line Titanium Back Box by Akrapovic

Unleash the full character of Porsche’s legendary flat-six with the Akrapovič Slip-On Race Line (Titanium) — a precision-engineered exhaust system developed for the latest 992.1-generation 911 GT3, GT3 Touring, GT3 RS, and S/T.

Constructed entirely from ultra-lightweight titanium, this system is the ultimate upgrade for enthusiasts seeking a more visceral sound, measurable performance gains, and significant weight reduction. More than just an exhaust, it’s how the 992 should have sounded from the factory — raw, responsive, and refined.

Uncompromised Sound

The Slip-On Race Line increases overall volume by +4.1 dB, bringing out a deeper, more aggressive exhaust note at higher RPMs while remaining smooth and subtle during cruising. In-house cast valve housings and precision-engineered muffler collectors optimise gas flow and durability, delivering the signature Akrapovič tone — free of intrusive drone.

Performance Gains by Setup

911 GT3 / Touring (992.1)

With Adapter Set (SS) (Stock Headers):
+8.8 hp @ 2,900 rpm, +17.8 ft-lb @ 2,400 rpm, 3.5 kg weight savings (20.7%)

With Evolution Header Set (Titanium):
+22.6 hp @ 4,550 rpm, +26.0 ft-lb @ 4,500 rpm, 7.3 kg total weight savings (28% lighter headers)

911 GT3 RS / S/T (992.1)

With Adapter Set (SS) (Stock Headers):
+14.1 hp @ 2,600 rpm, +28.1 ft-lb @ 2,600 rpm, 3.5 kg weight savings

With Evolution Header Set (Titanium):
+19.6 hp @ 2,600 rpm, +36.4 ft-lb @ 2,600 rpm, 7.3 kg total weight savings

These options allow owners to tailor their system for street or track use — keeping the factory headers for simplicity or upgrading to the full Evolution Line for maximum gains.

Design & Construction

Built entirely from Akrapovič’s race-proven titanium, this system features:

• Twin titanium tailpipes with a sandblasted and coated finish

• Six internal sleeve imprints symbolising the flat-six engine

• Precision-cast muffler internals for long-term reliability

The result is a system that not only sounds incredible but fits perfectly within the 992’s underbody — engineered for both performance and visual harmony.

Compliance & Warranty

• Suitable for road use in the UK

• No ECU remap required when used with stock headers and Adapter Set

• ECU remap recommended when upgrading to Evolution Header Set

• 2-year warranty from Akrapovič

Compatible Models

• Porsche 911 GT3 (992.1) – 2021–2024

• Porsche 911 GT3 Touring (992.1) – 2021–2024

• Porsche 911 GT3 RS (992.1) – 2022–2025

• Porsche 911 S/T (992.1) – 2022–2025

Fitment Notes

• Original Porsche V-clamps may need replacing if damaged during removal

• System is designed for closed-course competition use, but suitable for road use in the UK

Components Required

Mandatory:

• Slip-On Race Line Adapter Set (SS) – Required for installation with stock headers

Optional:

• Evolution Header Set (Titanium) – For full system upgrade and maximum performance