Description
The RK-Tunes Valved Exhaust System for the BMW G80 M3, G82 M4, and G83 M4 Convertible is engineered to deliver maximum performance, exceptional sound quality, and OEM-like functionality. Designed specifically for the S58 platform, this complete cat-back exhaust system retains the factory equal-length exhaust architecture while increasing overall flow capacity through larger-diameter piping.
Unlike many aftermarket systems that utilize X-pipes or merge both banks into a single mid-pipe design, the RK-Tunes exhaust preserves the balanced flow characteristics of the factory exhaust layout. Maintaining separate equal-length pathways helps optimize exhaust scavenging, improve flow efficiency, and deliver a distinctive exhaust note worthy of BMW's twin-turbo inline-six.
This is a true full exhaust system, replacing both the factory mid-pipe and rear section. The integrated valved design utilizes OEM-style exhaust valves, allowing seamless operation through factory controls without the need for additional wiring, modules, or external valve controllers.
Available in both stainless steel and titanium configurations, customers can choose between maximum value and durability or significant weight savings with the premium titanium option.
Key Features
- Complete cat-back exhaust system for BMW G8X M3 and M4 models
- Designed specifically for the BMW S58 engine platform
- Retains factory equal-length exhaust configuration
- Larger-diameter piping for increased exhaust flow
- High-flow H-pipe design
- OEM-style integrated exhaust valves
- No additional controllers or wiring required
- Direct bolt-on installation after the downpipes
- Improved exhaust tone and performance
- Available in stainless steel or titanium construction
Performance Benefits
- Increased exhaust flow capacity
- Reduced exhaust restriction
- Improved throttle response
- Aggressive performance exhaust note
- Maintains factory valve functionality
- Supports stock and high-horsepower applications
- Preserves equal-length exhaust characteristics
Material Options
Stainless Steel
- Excellent durability
- High corrosion resistance
- Cost-effective performance upgrade
Titanium
- Significant weight reduction
- Excellent strength-to-weight ratio
- Premium motorsport-grade construction
- Enhanced performance and sound characteristics
Fitment
- BMW G80 M3 (2021+)
- BMW G81 M3 Touring (where applicable)
- BMW G82 M4 Coupe (2021+)
- BMW G83 M4 Convertible (2021+)
Installation Notes
- Bolts directly to factory or aftermarket downpipes
- Replaces both the mid-pipe and rear exhaust sections
- OEM valve integration requires no additional wiring or controllers
- Professional installation recommended
