Milltek Sport Rear Silencer Bypass Non‑Valved with GT‑80 Cerakote Black Trims for BMW 125i F20 F21 B48 2016 onwards
Transform the sound and character of your BMW 125i with this Milltek Sport rear silencer bypass. Designed for the B48-powered 1 Series hatchback, this non‑valved, louder rear section replaces the rear silencer to deliver an aggressive, motorsport‑inspired exhaust note and a sharper, freer‑flowing exhaust path. Finished with stealthy GT‑80 Cerakote Black trims and built to fit the OE twin left valance, it looks as good as it sounds.
Why choose Milltek for your BMW 125i exhaust upgrade
Every Milltek system is designed, developed and hand‑finished in the UK using aerospace‑grade type 304, non‑magnetic stainless steel. This premium material resists discolouration and corrosion and is used throughout the pipework, silencers and associated hardware for long‑lasting performance.
Milltek’s mandrel bending maintains a constant radius for optimised gas flow, with carefully selected bore diameters enlarged over stock for performance without sacrificing mid‑range torque. Each system goes through comprehensive acoustic development to achieve a sporty, crisp tone without unwanted NVH, drone or cabin resonance.
Key features and benefits
- Rear silencer bypass delete for a louder, more aggressive exhaust note
- Non‑valved setup for consistent sound at all times
- GT‑80 Cerakote Black trims for a stealth, OEM‑plus finish
- High‑quality 304 stainless steel construction, made in the UK
- Mandrel‑bent pipework for improved exhaust gas flow
- Developed to minimise drone for daily driving comfort
- Direct performance exhaust upgrade for BMW 125i drivers seeking sound and presence
Fitment and compatibility
- Vehicle: BMW 125i 3 Door Hatch and 5 Door Hatch
- Chassis: F20 and F21
- Engine: B48 engine only
- Model years: 2016 onwards
- Tailpipes: GT‑80 Cerakote Black trims
- Valance: Fits OE twin left valance
- Configuration: Non‑valved, louder rear silencer bypass delete
What enthusiasts love about this setup
Customers choose this Milltek rear silencer bypass for the deeper tone, sharper response feel and premium finish. We have installed these on customer cars and the feedback has been consistently positive for sound quality, build quality and fit. If you want your BMW 125i to sound like a proper performance hatch while keeping a clean, OEM‑plus appearance, this is the upgrade.
Installation and support
Designed to integrate with the factory system and OE twin left valance. Professional fitting recommended for best results.
Want us to fit it for you? Nforcd is based in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Popular search terms
Milltek 125i exhaust, BMW 125i F20 exhaust, BMW 125i F21 exhaust, B48 exhaust upgrade, rear silencer bypass, rear silencer delete, non valved exhaust, loud exhaust, GT‑80 black tips, Cerakote black tailpipes, performance exhaust BMW 1 Series, Milltek Sport BMW 125i, OE twin left valance exhaust, 2016 BMW 125i exhaust.