Akrapovic BMW M3 (G80, G81) 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). Designed 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 developed to deliver comfort during normal driving and a deeper, sportier character when the M3 or M4 is driven more dynamically.

Titanium construction and carbon-fibre tailpipes

This Slip-On Line system is constructed from high-grade lightweight titanium and finished with hand-crafted carbon-fibre tailpipes. The tailpipe design is available in two styles: the 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. 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. Its sound character delivers a rich tone at normal cruising and rises to a deep, sporty sound when the M3 or M4 is driven more enthusiastically.

This makes the system suitable for drivers who want a more engaging exhaust note without losing cruising comfort.

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%. ECU remapping is not needed for this configuration.

Technical data

Fitment and compatibility

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 according to the supplied product information.

It fits both OPF and non-OPF vehicles. However, 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. If the optional link pipes, downpipes, or Akrapovič Sound Kit are installed, 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 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.