Milltek Rear Silencer Bypass Non-Valved - Louder - GT-90 Burnt Titanium Trims - BMW 125i F20 F21 B48 Engine 2016 on - Suits M135i Valance
Transform the sound and presence of your BMW 125i F20 or F21 with the Milltek Rear Silencer Bypass non-valved rear section with GT-90 burnt titanium trims. This is the sought-after Milltek Sport back box delete for the B48 engine 2016 on, designed to fit cars with the M135i valance or when upgrading to the M135i rear diffuser. Expect a louder, deeper, more aggressive tone with stunning GT-90 burnt titanium tailpipe finishers that perfectly fill the BMW hatch rear bumper.
Why choose Milltek for your BMW 125i F20 F21 B48
Every Milltek exhaust is designed, developed and hand finished in the UK. Constructed from aerospace grade type 304 non-magnetic stainless steel for exceptional durability and corrosion resistance, this rear silencer bypass delivers serious sound without compromising everyday refinement. Milltek’s comprehensive acoustic development ensures a sporty, crisp exhaust note with minimal NVH and no unwanted cabin drone.
- Direct replacement rear silencer bypass for BMW 125i F20 F21 B48 2016 on
- Non-valved rear section for a louder, more engaging exhaust note
- GT-90 burnt titanium trims - premium blue heat tint tailpipes, also known as GT90 tips
- Aerospace grade T304 stainless steel throughout for long life
- Mandrel bent pipework for optimised gas flow
- Carefully selected bore size for performance without loss of mid-range torque
- Developed to deliver a sporty, refined tone with minimal drone
- Designed, developed and hand finished in the UK by Milltek Sport
Fitment and compatibility
- BMW 125i 3 Door Hatch F20 - B48 engine - 2016 on
- BMW 125i 5 Door Hatch F21 - B48 engine - 2016 on
- Requires M135i rear valance or diffuser to suit the GT-90 trims
- For B48 engine models only - not suitable for earlier non B48 variants
This axle back rear section replaces the factory rear silencer only and retains factory catalysts and emissions hardware. It is an ideal exhaust upgrade for enthusiasts searching for a BMW 125i exhaust, F20 exhaust, F21 exhaust, 125i back box delete, rear box delete, rear silencer delete or straight through rear section with titanium tips.
Real world results from Nforcd
We have installed this Milltek rear silencer bypass on customer BMW 125i F20 and F21 builds and on our own cars. Feedback has been consistently positive - superb fit and finish, a bolder exhaust note that suits the B48 engine, and great road manners with minimal drone. The GT-90 burnt titanium trims complete the look with an authentic motorsport style.
Installation and support
Professional fitting is recommended. For fitting, choose Nforcd in Warwickshire. Request a quote or expert advice at Sales@nforcd.com and we will be happy to help with fitment checks, M135i valance compatibility and installation booking.
SEO and search terms
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Note: If you are unsure about compatibility with your valance or diffuser, contact Nforcd and we will confirm before ordering.