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The OPF/GPF-Ready Full-System Titanium Exhaust for the 2019 to 2024 G63 AMG
The Akrapovic S-ME/TI/4/1 Evolution Line Exhaust System with High-Flow Catalytic Converters is engineered for 2019 to 2024 Mercedes-Benz G63 AMG (W463A) vehicles equipped from the factory with OPF or GPF particulate filters. This is the complete solution from headers to titanium tips, including integrated high-flow cats that maintain compliance while maximizing exhaust flow. Akrapovic S-ME/TI/4/1 delivers verified dyno-tested gains of 10 kW (14 HP) at 5,500 rpm and 17 Nm at 2,500 rpm while cutting 16.4 kg from the factory system. The titanium shell and INCONEL headers make this one of the lightest full-system upgrades available for the G-Class, producing a commanding, race-inspired V8 exhaust note that carries the Akrapovic signature sound.
Key Features
- Integrated High-Flow Catalytic Converters — The Akrapovic S-ME/TI/4/1 includes INCONEL high-flow cats designed for OPF/GPF W463A G63 AMG models, ensuring proper fitment and maximizing exhaust flow without sacrificing OBD-II compliance in supported markets.
- Dyno-Verified Power Gains — Akrapovic's own testing confirms +10 kW (14 HP) at 5,500 rpm and +17 Nm at 2,500 rpm on a stock 2019 G63 AMG W463A with OPF/GPF.
- 16.4 kg Weight Reduction — The S-ME/TI/4/1 system weighs 18.7 kg versus the OE system's 35.1 kg, dropping 16.4 kg for improved vehicle dynamics and acceleration.
- Aerospace-Grade Titanium Construction — Primary tubes and muffler housings are Grade 1 and Grade 2 titanium. INCONEL alloy resists extreme turbine-exit heat cycles without deformation.
- Race-Derived Sound Profile — The titanium mid-chamber resonance section balances deep throttle roar with an absence of highway drone, the same technology Akrapovic deploys in MotoGP.
- Direct Bolt-On for OPF/GPF G63 AMG — All mounting brackets, flanges, and hardware align to the OPF/GPF W463A platform without modification or custom fabrication.
- Handcrafted in Slovenia — Every Akrapovic S-ME/TI/4/1 is TIG-welded and inspected by specialist technicians at the Akrapovic manufacturing facility in Ivancna Gorica, Slovenia.
This Part Fits
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2019-2024 | Mercedes-Benz | G63 AMG | AMG (W463A, 4.0L V8 Biturbo, with OPF/GPF) |
Specifications
| Detail | Value |
|---|---|
| MPN | S-ME/TI/4/1 |
| UPC | 3831126412692 |
| Brand | Akrapovic |
| System Type | Evolution Line Catback with High-Flow Cats (Full System) |
| Material | Titanium (Grade 1 and Grade 2) with INCONEL headers and cats |
| System Weight | 18.7 kg |
| OE System Weight | 35.1 kg |
| Weight Savings | 16.4 kg |
| Power Gain | +10 kW (+14 HP) at 5,500 rpm |
| Torque Gain | +17 Nm at 2,500 rpm |
| Compatible Engine | 4.0L V8 Biturbo (with OPF/GPF) |
| Country of Origin | Slovenia |
| Warranty | Lifetime against manufacturing defects |
What's Included
- INCONEL header assembly
- Integrated high-flow catalytic converter section
- Titanium link pipe set with resonance chamber
- Titanium muffler assembly
- Titanium exhaust tips
- All mounting brackets, clamps, and gaskets
- Akrapovic installation instructions
Frequently Asked Questions
What is the difference between the Akrapovic S-ME/TI/5/1 and the S-ME/TI/4/1 for the G63 AMG?The S-ME/TI/5/1 is designed for G63 AMG W463A models without OPF or GPF particulate filters. The S-ME/TI/4/1 includes integrated high-flow catalytic converters and is engineered specifically for W463A vehicles equipped from the factory with OPF or GPF. Verify which filter configuration your vehicle has before ordering.
Does the Akrapovic S-ME/TI/4/1 pass emissions testing?The S-ME/TI/4/1 includes high-flow catalytic converters that are designed to support OBD-II operation on G63 AMG OPF/GPF models in supported markets. Emissions regulations vary by jurisdiction. Consult your local regulations and installer before fitting this exhaust on a street-driven vehicle.
What power gains does the Akrapovic S-ME/TI/4/1 produce on the G63 AMG?Akrapovic's dyno testing on a 2019 G63 AMG W463A with OPF/GPF confirmed gains of 10 kW (approximately 14 HP) at 5,500 rpm and 17 Nm of torque at 2,500 rpm over the stock exhaust system.
How much lighter is the Akrapovic S-ME/TI/4/1 compared to the G63 AMG factory exhaust?The S-ME/TI/4/1 weighs 18.7 kg versus the OE system at 35.1 kg. That is a weight savings of 16.4 kg, meaningfully reducing unsprung mass and improving throttle response and vehicle agility.
Is the Akrapovic G63 AMG OPF/GPF catback a bolt-on installation?Yes. The S-ME/TI/4/1 is engineered as a direct replacement for the OPF/GPF G63 AMG W463A. It uses all factory mounting locations and includes all necessary hardware. No cutting or fabrication is required.
Does the Akrapovic S-ME/TI/4/1 require an ECU tune?No. The system produces measured power gains in its stock configuration. An ECU tune is not required, though one may complement the exhaust for additional performance.
What does the Akrapovic G63 AMG OPF/GPF Evolution Line sound like?The titanium mid-chamber resonance section produces a deep, aggressive idle and full-throated V8 roar under acceleration. The tuned resonance geometry eliminates the harsh drone common to less engineered aftermarket exhaust systems at motorway speeds.
What warranty does Akrapovic provide on the S-ME/TI/4/1?Akrapovic covers the S-ME/TI/4/1 with a lifetime warranty against manufacturing defects including all titanium tubing, welds, and catalytic converter housings under normal use conditions.
How long does the S-ME/TI/4/1 installation take?An experienced exhaust shop can typically complete the install in four to six hours. The additional catalytic converter section requires care during alignment. Professional installation is strongly recommended.
Installation Instructions
- Raise the vehicle on a lift and allow all exhaust components to cool fully before beginning disassembly.
- Apply penetrating lubricant to all OE exhaust flange bolts, hangers, and sensor bungs. Allow 15 minutes of soak time.
- Disconnect and safely store the OPF/GPF oxygen and differential pressure sensor connectors.
- Remove the OE exhaust system from rear to front: tips, muffler, mid-pipe, catalytic converters, and headers.
- Clean all mating flange surfaces and inspect all rubber exhaust hangers. Replace any that are cracked or stiff.
- Install the Akrapovic INCONEL header assembly, torquing all flange bolts to specification.
- Attach the integrated high-flow catalytic converter section and reconnect the sensor connectors.
- Connect the titanium link pipe and resonance chamber section, hand-tightening all clamps.
- Hang the titanium muffler assembly and check for adequate clearance from the underfloor and heat shields.
- Align the titanium tips symmetrically and torque all clamps and fasteners to the Akrapovic specification sheet values.
- Start the engine, perform an OBD-II scan for any fault codes, and heat-cycle the exhaust twice before final inspection.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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