BMW 125i F20/F21 B48 Milltek rear silencer bypass with GT-90 titanium trims

Direct-fit rear silencer bypass for BMW 125i F20 and F21 models with the B48 engine (2016+). Non-valved, so no electronics, no flaps, no surprises - just a louder, more aggressive exhaust note with zero drone or cabin resonance.

Made in the UK from 304 stainless steel, mandrel bent and flow-optimised. Includes GT-90 titanium tailpipes (90 mm) that sit flush with the M135i-style rear valance for a clean, purposeful look.

• Bolt-on fitment - no cutting, welding or ECU tweaks
• Improves throttle response and mid-range torque
• Designed for fast road or track day use, not silent commuting