Description
SLN Performance GPF Delete Exhaust Midpipes for BMW G90 and G99 M5 (OPF-Equipped)
The SLN Performance GPF Delete Exhaust Midpipes for the BMW G90 and G99 M5 (OPF-equipped models) are engineered as a premium upgrade to unleash the authentic character and performance of the S68 4.4L twin-turbo V8. Precision-crafted from high-quality T304 stainless steel, these midpipes completely replace the restrictive factory Gasoline Particulate Filters (GPFs/OPFs) with smooth, equal-length, free-flowing pipework—eliminating one of the main bottlenecks in the exhaust system.
This direct swap delivers a substantial reduction in backpressure, noticeably quicker throttle response, enhanced engine breathing for better efficiency and tuning potential, and a significantly louder, rawer, more engaging V8 exhaust note that’s balanced and refined thanks to the equal-length twin layout. The result is a transformed driving experience with deeper tones, increased presence, and that signature aggressive BMW M soundtrack—without needing a full exhaust replacement.
Built with mandrel-bent tubing and expert TIG welding for optimal flow, strength, and durability, these midpipes offer flawless bolt-on fitment to both OEM and aftermarket rear silencers/axle-back sections, making them an ideal standalone upgrade or complement to other modifications.
Main Benefits
- Premium T304 motorsport-grade stainless steel construction for exceptional strength, corrosion resistance, and longevity
- Fully removes restrictive GPFs/OPFs, replacing them with equal-length twin pipework for perfectly balanced exhaust tone
- Dramatic reduction in backpressure for improved engine efficiency and response
- Sharper throttle feel and enhanced mid-range pull
- Unleashes a raw, aggressive, and far more immersive V8 exhaust sound
- Equal-length design ensures symmetrical, refined acoustics that elevate the car’s character
- Seamless compatibility with factory or aftermarket rear exhaust systems
- Mandrel-bent and TIG-welded construction for smooth flow and reliable durability
- Boosts tuning headroom on the S68 platform
- Backed by a 1-year SLN Performance warranty and guaranteed proper fitment
- Designed for straightforward installation between factory downpipes and rear silencers (approx. 2–3 hours with professional tools)
Important Legal Notice – Track/Motorsport Use Only
These GPF Delete midpipes are intended exclusively for off-road, motorsport, closed-course, or track use (such as track days or drag strips). Removing the factory Gasoline Particulate Filters (GPFs/OPFs) violates emissions regulations in many regions and may exceed legal noise limits in certain areas. Vehicles fitted with these will typically fail emissions or noise inspections in applicable jurisdictions.
Installation may trigger a check engine light, exhaust-related errors, or limp mode due to altered sensor readings. Proper operation typically requires ECU coding, aftermarket tuning, or emulator solutions to disable monitoring. SLN Performance strongly recommends limiting use to controlled environments only and not for public road driving. Always verify local laws and regulations.
Fitment Details
Compatible with BMW G90 M5 (2024 and newer, OPF-equipped)
Compatible with BMW G99 M5 Touring (2024 and newer, OPF-equipped)
Engine: S68 4.4-litre twin-turbo V8
Position: Mid-section (between downpipes and rear silencers)
