Stone Exhaust MINI B48 B48E F55 F56 Cooper S Cat-Back Valvetronic Exhaust System
Transform the way your MINI sounds and drives with the Stone Exhaust Cat-Back Valvetronic Exhaust System for the MINI Cooper S. Engineered for the B48 and B48E engines and precision matched to the MINI F55 5-door, F56 3-door Cooper S (2013+) and F60 Countryman Cooper S (2017+), this performance exhaust delivers a deep, refined tone with zero drone, genuine power gains and perfect OEM fitment.
If you are searching for a MINI Cooper S exhaust, MINI F55 exhaust, MINI F56 exhaust, MINI Countryman F60 Cooper S exhaust, B48 exhaust upgrade, B48E performance exhaust, valved exhaust or cat back exhaust, this Stone Exhaust system is the go-to solution. It combines plug-and-play convenience, valvetronic sound control and race-bred manufacturing to give your MINI the sound and performance it deserves.
Why choose the Stone Valvetronic Cat-Back for your MINI Cooper S
- Designed specifically for MINI B48 and B48E engines - F55, F56 Cooper S and F60 Countryman Cooper S
- Valvetronic cat back exhaust with remote-controlled valves for quiet or aggressive sound on demand
- Plug and play OBDII controller with ON, OFF and AUTO modes for RPM-based valve operation
- OEM-style fitment created using 3D scanning and reverse engineering
- One-piece performance exhaust design to optimise flow and durability
- Eliminates drone commonly found on the standard Cooper S exhaust
- In-house dyno developed for proven power and torque gains
- Precision construction with mechanical welding, direct spot welding and overlapping-crisscross techniques
- 7-axis CNC bending for exceptional roundness and accuracy to keep flow smooth and consistent
- OPF exhaust option design with free OPF delete module available for OPF-equipped cars
Valvetronic control - quiet when you need it, loud when you want it
The Stone Valvetronic system arrives with a dedicated remote that lets you switch modes instantly:
- ON - valves open for maximum sound and flow
- OFF - valves closed for a refined, neighbour-friendly drive
- AUTO - valves open and close at a user-defined RPM
The controller connects to the OBDII port for a true plug and play installation.
Dyno-proven performance
|
POWER + 7.1 Ps at 5197 rpm |
TORQUE + 6.86 Nm at 4303 rpm |
OPF compatibility - free OPF delete option
Running an OPF-equipped MINI Cooper S? Stone provides an OPF delete option free of charge. This allows fitment of the Stone cat back to OPF cars without triggering error codes, so coding out the OPF fault on the ECU is not required.
Engineering that sets the benchmark
Stone Exhaust develops each MINI Cooper S performance exhaust using 3D scanning and reverse engineering to ensure exact OEM fitment and optimised flow. During R&D, 3D simulation is used to analyse gas flow, temperature and pressure, iterating the design until optimal performance is achieved.
Manufacturing is equally advanced. A 7-axis CNC bending machine achieves outstanding roundness and precision, helping prevent flow disruption and weld stress. Direct spot welding plus crisscross and overlapping techniques increase weld penetration and durability in high-heat zones, creating a reliable, long-lasting MINI Cooper S cat back exhaust that looks as good as it performs.
What you will love about this MINI Cooper S exhaust
- Real control over your soundtrack with dual-valve valvetronic operation
- Deep, sporty tone with no motorway drone
- Perfect direct replacement fit for F55, F56 Cooper S and F60 Countryman Cooper S
- Noticeable power and torque improvements backed by dyno data
- Premium build quality and long-term reliability
Compatibility - B48 and B48E engines
- MINI F55 Cooper S 5-door hatch - 2013+
- MINI F56 Cooper S 3-door hatch - 2013+
- MINI F60 Countryman Cooper S - 2017+
Installation and fitting
The Valvetronic controller is plug and play via the OBDII port and can be installed within minutes. Professional fitting of the cat back system is recommended. For installation in the UK, Nforcd in Warwickshire can supply and fit this MINI Cooper S exhaust. Request a fitting quote at Sales@nforcd.com.
Stone Valvetronic System - installation video
Fitted photos
R&D and 3D scanning
Stone’s engineers use reverse engineering by 3D scanning OEM MINI components to understand functionality and identify areas for improvement such as pipe diameter, routing and bend angles. Continuous data collection and 3D simulation inform every design decision for the B48 and B48E exhaust systems.
7-axis CNC bending
Using a state-of-the-art 7-axis CNC bending machine, Stone achieves high roundness and minimal outer-bore wear at tight bends. Combined with reverse engineering and 3D scanning, the result is an integrally moulded exhaust pipe with exceptional dimensional accuracy that promotes smooth exhaust gas flow.
Art of welding
High-stress zones benefit from crisscross and overlapping welds to increase width and penetration, enhancing endurance and tolerance. Direct spot welding performed by mechanical welding arms provides greater precision and consistency for a robust, long-lasting MINI performance exhaust.
Warranty
Stone Exhaust 2-year warranty.
Part numbers
- AP510S - B48 Engine
- Ap510GS - B48E Engine
Keywords to help you find the right exhaust
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