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The Akrapovic M-BM/T/8H Slip-On Line is a full titanium muffler replacement engineered for the 2015 to 2018 BMW M3 (F80/F80 LCI) and 2015 to 2020 BMW M4 (F82/F83). The M-BM/T/8H trims 9.5 kg from the muffler assembly while delivering dyno-verified gains of +6 kW and +11 Nm from the S55 twin-turbo inline-six. The system connects at the OEM mid-pipe with no cutting or welding, produces the deep BMW M howl that escalates to a high-rev scream at full throttle, and is ECE type-approved for street use in supported regions. Exhaust tips are required and sold separately from the Akrapovic P-BM/T compatible series.
This Part Fits
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2015-2018 | BMW | M3 | Competition |
| 2015-2020 | BMW | M4 | Competition |
| 2015-2020 | BMW | M4 | CS |
| 2016 | BMW | M4 | GTS |
Specifications
| Detail | Value |
|---|---|
| Brand | Akrapovic |
| MPN | M-BM/T/8H |
| UPC | 3831113521048 |
| System Type | Slip-On Line (Titanium) |
| Compatible Vehicle | 2015-2018 BMW M3 (F80), 2015-2020 BMW M4 (F82/F83) |
| Engine | 3.0L S55 Twin-Turbo Inline-Six |
| Material | Titanium |
| System Weight | 7.2 kg (15.9 lbs) |
| OEM Weight | 16.7 kg |
| Weight Savings | 9.5 kg |
| Peak Power Gain | +6 kW at 6,250 rpm |
| Peak Torque Gain | +11 Nm at 3,050 rpm |
| Homologation | ECE type-approved |
| Tips | Required, sold separately (P-BM/T series) |
| Country of Origin | Slovenia |
| Warranty | 24 months |
What's Included
Frequently Asked Questions
Does the M-BM/T/8H include exhaust tips?No. Exhaust tips are required and sold separately. The M-BM/T/8H is compatible with the Akrapovic P-BM/T series of titanium and carbon fiber tip sets designed for the F80/F82/F83 chassis.
Will the M-BM/T/8H fit the 2015 BMW M4 Convertible (F83)?Yes. The M-BM/T/8H is engineered for the F82 coupe and F83 convertible M4 variants sharing the same S55 drivetrain and exhaust routing from 2015 through 2020.
Does this exhaust fit the BMW M3 2018?Yes. The M-BM/T/8H is confirmed for the 2015 through 2018 BMW M3 (F80/F80 LCI) with the S55 3.0-liter twin-turbo inline-six engine.
Does the M-BM/T/8H require an ECU tune?No ECU tuning is required. The M-BM/T/8H is a direct bolt-on replacement. An ECU recalibration is optional but may maximize the documented power gains.
How much power does the M-BM/T/8H add to the BMW M3 or M4?Akrapovic dyno results show +6 kW at 6,250 rpm and +11 Nm of torque at 3,050 rpm on the stock BMW S55 engine with the M-BM/T/8H installed and no other modifications.
Is the M-BM/T/8H street legal in the United States?The M-BM/T/8H is ECE type-approved for road use in supported markets. For US street use, verify compliance with your state's noise and emissions regulations before installation.
What is the weight saving compared to the factory exhaust?The M-BM/T/8H weighs 7.2 kg versus the factory 16.7 kg muffler assembly, saving 9.5 kg concentrated at the rear of the vehicle for improved chassis balance.
How long does it take to install the M-BM/T/8H?An experienced technician typically completes installation of the M-BM/T/8H in 1 to 2 hours. The bolt-on slip-on design requires no cutting, welding or special equipment beyond basic hand tools and a lift.
Installation Instructions
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