BMW M3 / M4 (G80 / G81 / G82 / G83) | Slip-On Line (Titanium)

Akrapovič is the global leader in high-performance exhaust systems, proudly designed and manufactured in Slovenia. Renowned for their unmistakable sound, race-proven engineering, and commitment to innovation, Akrapovič is trusted by top manufacturers, motorsport teams, and drivers worldwide. A materials technology company at its core, Akrapovič invests extensively in research and development to deliver a deep, rich exhaust note alongside improved performance and reduced weight. 

Akrapovic Performance Exhaust — S-BM/TI/33H

The Akrapovič Slip-On Line (Titanium) is a precision-engineered exhaust system that brings out the true character and performance of the G80 / G81 BMW M3 and G82 / G83 BMW M4. Crafted entirely from lightweight titanium, this system is designed to enhance every aspect of the driving experience—from sound and performance to weight savings and aesthetics. More than just an exhaust, it’s the finishing touch the M3 / M4 deserves and how it should have come from the factory.

Sound

The Slip-On Line transforms the BMW M3 / M4’s exhaust note, unlocking its true character. At cruising speeds, the system delivers a smooth, refined tone, while acceleration produces a deeper, more aggressive growl that perfectly complements the car’s sporty nature. Enhanced natural overrun provides controlled pops and burbles, adding excitement to every gear change. With the advanced Akrapovič Control Kit regulating exhaust flow and tailoring the sound profile, the system ensures precise sound management in all driving conditions, all while eliminating intrusive droning.

Performance

Designed to optimise performance, the Slip-On Line (Titanium) delivers measurable gains that elevate the driving experience of the BMW M3 and M4. Its freer-flowing exhaust design reduces back pressure, improving gas flow and enabling the engine to respond more efficiently. Akrapovič’s dyno testing confirms a power increase of +10.9 hp at 6,000 rpm and +10.3 ft-lb of torque at 5,000 rpm, resulting in sharper throttle response and stronger acceleration. The system also reduces weight by 8.3 kg—35% lighter than the stock exhaust, improving agility, cornering precision, and overall handling. These benefits are achieved without the need for ECU remapping, ensuring seamless installation and compatibility with the factory setup of the M3 and M4.

Design

The Slip-On Line is as visually striking as it is functional. Featuring a smaller, sleeker back box, it replaces the bulkier standard unit with a design that is cleaner, lighter, and more purposeful. Akrapovič’s attention to detail is evident in every element, with components such as the valve housings and collectors cast in their in-house titanium foundry, ensuring durability and precision.

Two tailpipe designs are available: a bold octagonal option with carbon fibre outer sleeves or a classic cylindrical style. Both add a premium, motorsport-inspired finish while reducing overall weight, perfectly complementing the M3/M4’s aggressive styling.

Modern emissions and noise regulations often stifle the sound and performance of today’s sports cars. Akrapovič’s Slip-On Line addresses this head-on, restoring the visceral sound and responsiveness that define the BMW M3/M4 as true driver’s cars. Designed and built for seamless integration, this is a hardware upgrade with no compromises.

Compliance, Compatibility, and Warranty

The Akrapovič Slip-On Line (Titanium) is fully ECE type-approved, ensuring compliance with emissions and noise regulations for road use. No ECU remapping is required, ensuring seamless integration with the vehicle’s existing systems.

Warranty: Backed by Akrapovič’s 2-year product warranty.

The Avon Tuning G81 M3 with Akrapovic Exhaust System! Have you been wanting some noise for your M3 or M4? Well, check out what we have done to ours!

After months of development and testing on the S58 platform, Akrapovic released the Slip-On-Line for the M3 (G81) to the market.

Click HERE to see more!

Mandatory Components:

• Tail Pipe Set: Choose from Octagonal Carbon, Octagonal Chopped Carbon, or Round Carbon finishes.