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Armytrix BMW F40 M135i xDrive (2019-2024) valvetronic exhaust system
£3,388.00
Bring your hot hatch to life with the ARMYTRIX Valvetronic Exhaust System for the BMW F40 M135i xDrive. Engineered for the B48A20 2.0L turbocharged engine and OPF-equipped models, this system offers a dramatic transformation in tone, flow, and driver engagement—while still maintaining OEM refinement when needed.
From backroad blasts to everyday commutes, the ARMYTRIX system redefines your M135i’s potential with real-time control over exhaust tone and a system built to outlast the car.
Fitment:
Model: BMW M135i xDrive
Chassis: F40
Years: 2019–2024
Engine: B48A20 2.0L Turbocharged I4
Emission Type: OPF-Equipped
Drive Orientation: Left-Hand Drive & Right-Hand Drive compatible
VIN Verification: Required to confirm fitment
Note: Full system (catback + downpipe) recommended for optimal exhaust tone and CEL prevention
Key Features:
App-Controlled Valvetronic Exhaust System – instantly control exhaust valves via smartphone or remote
Main Pipe Diameter: 2.75” for optimal pressure balance and turbo response
Exhaust Tips: Dual 4.0” – aggressive, clean styling that complements the F40’s design
OBDII Plug-and-Play Integration: Simplified install and full digital compatibility
Exclusive CEL Reduction Module: Designed to clear fault codes caused by OPF and high-flow/downpipe installs
High-Quality Stainless Construction: Built to resist corrosion and deliver consistent performance
Valvetronic Sound Modes:
Comfort Mode (Valves Closed): Quiet, refined, and daily-drivable
Sport / Sport+ (Valves Open): Aggressive and powerful—unleash the full soundtrack of the B48
Auto-Adaptive Control: System reacts to throttle input and RPM for a seamless, driver-responsive experience
Why ARMYTRIX for the F40 M135i xDrive?
Developed specifically for OPF models
Full system recommended to unleash the best sound and throttle response
Easy-to-use, app-based valve control for real-world driving flexibility
Dual 4” tips and precision fitment to OEM standards
Reduces the chance of CEL with advanced Armytrix software
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PLEASE BE AWARE: Sports cats can NOT legally be installed on a vehicle for use on a public road that was manufactured after 1st March 2001 unless type ECE 103R approved - this can be identified in either the product description and/or in the Technical Information section listed. If you have any doubt on this approval, please contact us immediately for confirmation. Fitting a De-Cat/Cat Bypass, DPF delete/bypass or GPF delete/bypass to a vehicle that is to be used on UK roads will cause the vehicle to fail the MOT emissions test, therefore rendering it unroadworthy and illegal to be used on the road. Therefore, any such products are strictly sold as off-road or motorsport use only and NOT for road use. The vehicle should be transported from place to place via a trailer, flatbed or other recovery means.
