Direct-fit valvetronic cat-back for F20 and F21 125i models with the N26 engine - no coding, no cutting, no compromises. Fully OBDII-controlled with On / Off / Auto modes via plug-in module.
One-piece construction with 7-axis CNC-bent tubing for optimal flow and clean fitment
Zero drone tuning - aggressive tone under load, quiet at cruise
Requires M135i rear bumper for full visual integration
Compatible with LCI models (2010-2019); built to match OEM mounting points
Stone Exhaust 2-year warranty; mechanical TIG welding throughout
