Stone Exhaust BMW N26 F22 F23 228i Cat-Back Valvetronic Exhaust
Upgrade your BMW 2 Series with the Stone Exhaust Valvetronic Cat-Back Exhaust System and unleash a deeper, cleaner sound with real performance gains. Designed specifically for the BMW F22 228i Coupe and F23 228i Convertible with the N26 engine, this cat-back exhaust delivers OEM-level fitment, droneless cruising and a switchable valved soundtrack for daily driving and spirited runs.
Part Number: AP508NSN26
Why choose this BMW 228i exhaust
Stone Exhaust engineers 3D-scan the OEM BMW system, then reverse engineer every bend and flange to guarantee a precise, 100% OEM fit. Developed and validated on an in-house dyno, this BMW 228i performance exhaust is tuned for smooth flow, crisp throttle response and the signature Stone tone without the cabin drone that plagues many systems.
We have installed and used this system ourselves here at Nforcd and our customers love the fit, the quality and the switchable sound. It is an ideal upgrade for anyone searching for BMW 228i exhaust, BMW F22 exhaust, BMW F23 exhaust, BMW N26 cat back, BMW 2 Series valved exhaust, BMW 228i performance exhaust UK.
Valvetronic control, your sound on demand
The Valvetronic remote gives you instant control of the valves with three modes: ON, OFF and AUTO. Open for an aggressive tone, close for refined comfort, or use AUTO to open and close at your chosen RPM. The plug and play OBDII controller makes installation simple and clean, with no complicated wiring. Perfect for daily driving, commuting and weekend blasts.
Key features
- BMW 228i cat-back exhaust for N26 engine - F22 Coupe and F23 Convertible
- Valvetronic valved exhaust - switchable ON, OFF, AUTO via remote
- Plug and play OBDII controller - quick install, clean integration
- One piece design for optimal flow and reliability
- Eliminates drone vs the standard exhaust system for comfortable cruising
- 3D scanning and reverse engineering for 100% OEM fitment
- In-house dyno developed for proven performance and sound
- Precision mechanical welding, direct spot welding and crisscross overlap techniques for long-term durability
- 7 axis CNC bending for exceptional roundness and flow accuracy
- Built for enthusiasts who want a quality BMW 2 Series performance exhaust upgrade
Engineering that makes a difference
From R&D to final welds, Stone Exhaust focuses on flow, heat management and structural integrity. The 7 axis CNC bending process achieves up to 98 percent roundness and precise radii, which helps prevent turbulence and maintains consistent gas velocity. Combined with direct spot welding and overlapping welds at high-stress joints, the result is a robust, leak-resistant system that sounds superb and performs reliably.
Remote-controlled Valvetronic
Enjoy quiet early morning starts or open the valves for a stronger tone when the road opens up. The AUTO mode can be set to your preferred RPM so the system adapts to your driving. This is the ultimate BMW 228i valved exhaust, BMW F22 catback, BMW F23 cat back, BMW 2 Series exhaust upgrade for drivers who want control.
Installation and fitment
This BMW 228i cat-back exhaust is designed for a straightforward fit using factory mounting points. The OBDII controller is plug and play. For professional fitting, book with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility
BMW 2 Series N26 engine models:
- F22 228i 2012+ and 228i xDrive 2013+
- F23 228i 2014+ and 228i xDrive 2014+
What you will experience
- Cleaner, richer exhaust note with valves open
- Refined, comfortable volume with valves closed
- Crisp throttle response and smooth flow from dyno-developed routing
- Daily-drive friendly, weekend-ready performance
Video
Warranty
Stone Exhaust 2 year warranty.
Part number
AP508NSN26
Popular search terms
BMW 228i exhaust, BMW 228i cat back, BMW 228i catback, BMW F22 exhaust, BMW F23 exhaust, BMW 2 Series exhaust, BMW N26 exhaust, BMW 228i valvetronic exhaust, BMW 228i valved exhaust, BMW 228i performance exhaust UK, BMW F22 228i cat-back, BMW F23 228i cat back, Stone Exhaust BMW 228i, plug and play OBDII exhaust controller, BMW 228i xDrive exhaust upgrade.