Akrapovic BMW M3 (G80, G81) OPF/GPF Slip-On Line S-BM/T/40H

Akrapovic BMW M3 Slip-On Line overview

The Akrapovic BMW M3 Slip-On Line S-BM/T/40H is a high-grade lightweight titanium exhaust system for the BMW M3 (G80, G81) OPF/GPF. Developed as a Slip-On Line Titanium system, it combines reduced weight, Akrapovič sound control, carbon-fibre tailpipe styling, and dyno-tested performance gains.

The system weighs 35% less than the stock exhaust and features a pair of collectors cast in Akrapovič’s in-house foundry. It is designed to offer both cruising comfort and a deeper, sportier exhaust character when the M3 or M4 is driven more dynamically.

Titanium construction and tailpipe design

This Slip-On Line system uses high-grade lightweight titanium and is designed to work with hand-crafted carbon-fibre tailpipes. Buyers can choose between two tailpipe styles: a ground-breaking octagonal shape made from lightweight titanium with a carbon-fibre outer sleeve, or a more traditional classic cylindrical design.

The Tail Pipe Set Carbon must be ordered separately as a mandatory part. Please choose one of the following product codes:

• TP-CT/69
• TP-CT/68
• TP-CT/73/CF

Sound character and Akrapovič control kit

The Slip-On Line Titanium system comes with a specially developed Akrapovič control kit for a complete sound experience. The sound character offers a rich tone during normal cruising and rises to a deep, sporty sound when the M3 or M4 is driven more enthusiastically.

This balance makes the system suitable for drivers who want a more engaging exhaust note while retaining comfort for regular road driving.

Performance and weight data

When tested on the Akrapovič dyno against a BMW M4 Competition with a standard stock exhaust, the system delivered a power increase of 8.0 kW / 10.9 hp at 6,000 rpm and a torque gain of 13.9 Nm at 5,000 rpm.

The Akrapovič system weighs 15.3 kg, compared with 23.5 kg for the standard stock exhaust. This gives a weight reduction of 8.3 kg, equal to 35.0%.

Remapping is not needed for this configuration.

Technical data

Fitment and compatibility

According to the supplied product information, this exhaust system fits BMW M3 (G80, G81) applications and also fits xDrive, CSL, CS, LCI, M3 Touring (G81), M4 (G83) Competition, and Convertible models.

The system fits both OPF and non-OPF vehicles, but the ECE certificate is valid only for cars equipped with OPF filters. The ECE type-approval certificate is not valid for CSL and CS models.

ECE approval and optional parts

The Slip-On Line Titanium exhaust system is ECE type-approved for cars equipped with Otto/gasoline particulate filters. The ECE type-approval certificate covers Euro 6 EC-compliant vehicles.

Optional link pipes and downpipes are available for closed circuit usage. An optional Akrapovič Sound Kit is also available. With the installation of optional link pipes, downpipes, or the Akrapovič Sound Kit, the ECE type approval of the Slip-On Line Titanium system is no longer valid.

An optional hand-crafted carbon-fibre rear diffuser is also available to add extra visual impact to the Akrapovič tailpipes.

Ordering checks

Before ordering the Akrapovic Slip-On Line S-BM/T/40H, confirm the exact BMW model, body style, OPF/GPF status, ECE requirements, and mandatory Tail Pipe Set Carbon option. This is especially important for CSL and CS models, where the ECE type-approval certificate is not valid.