Cobra Sport BMW 1 Series F40 M135i/M135ix xDrive Cat Back Exhaust Venom Race Box Delete (2019+) | Resonated/Non-Resonated, Valved/Non-Valved | 3" Performance System

BMW 1 Series F40 M135i M135ix xDrive Cat-Back, Rear Box Delete by Cobra Sport

Unleash the soundtrack your hot hatch deserves with this Cobra Sport rear silencer delete system for the BMW F40 M135i and M135ix xDrive. Engineered with 3 inch 76.2 mm tubing from the catalytic converter backwards, this OPF PPF back upgrade removes the factory particulate filter section, centre resonator and rear box for a freer flowing path and a hard-edged motorsport tone. Expect a sharper feel on throttle, stronger presence on boost and head-turning aesthetics with premium tailpipe choices.

We have fitted these systems for our own customers and the feedback has been superb. Fitment quality is spot on, the valve control on the valved versions integrates seamlessly with the car’s drive modes, and the rear box delete brings the authentic M135i character to life. If you want a louder, cleaner, more purposeful sound from your B48 powered F40, this is the one.

What you get

• Cat-back layout, connects after the main catalyst for straightforward installation
• Replaces OPF PPF, middle section and rear silencer for maximum flow and tone
• Choice of resonated or non-resonated centre for volume control
• Available with or without factory-style valve control
• 3 inch 76.2 mm performance pipework to reduce back pressure and enhance turbo sound
• Tailpipe upgrades in polished chrome or carbon fibre to finish the rear end
• All required hardware included, backed by Cobra Sport lifetime warranty

Volume options explained: resonated systems include a centre silencer to smooth out harshness without losing character. Non-resonated systems remove the centre silencer for a louder, rawer note. Valved systems retain OE valve actuation so sound varies by driving mode. Non-valved systems deliver a consistent tone at all times.

Fitment

• BMW 1 Series F40 2019 onwards
• BMW M135i and M135ix xDrive 2.0 turbo

Important information

• This system removes the OPF PPF. An ECU calibration is required on OPF PPF cars to prevent a warning light.
• Intended for motorsport and off-road use only where legislation permits.
• Rear box delete systems are loud, choose resonated if you want more control over cabin volume.

Tailpipe choices

• TP19, 4.5 inch Chrome
• TP38, 4 inch Chrome Inverted
• TP106-CF, 4.5 inch Slash Cut Carbon Fibre
• TP107-CF, 4 inch Slash Cut Carbon Fibre

Part numbers

• BM132TP19, Resonated, Valved, TP19
• BM132TP38, Resonated, Valved, TP38
• BM132TP106-CF, Resonated, Valved, TP106-CF
• BM132TP107-CF, Resonated, Valved, TP107-CF
• BM124TP19, Resonated, Non Valved, TP19
• BM124TP38, Resonated, Non Valved, TP38
• BM124TP106-CF, Resonated, Non Valved, TP106-CF
• BM124TP107-CF, Resonated, Non Valved, TP107-CF
• BM133TP19, Non Resonated, Valved, TP19
• BM133TP38, Non Resonated, Valved, TP38
• BM133TP106-CF, Non Resonated, Valved, TP106-CF
• BM133TP107-CF, Non Resonated, Valved, TP107-CF
• BM125TP19, Non Resonated, Non Valved, TP19
• BM125TP38, Non Resonated, Non Valved, TP38
• BM125TP106-CF, Non Resonated, Non Valved, TP106-CF
• BM125TP107-CF, Non Resonated, Non Valved, TP107-CF

Professional installation and ECU work

For a hassle-free install and calibration support, book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer and warranty

Made by Cobra Sport with a lifetime warranty on the exhaust system for the original purchaser.

Gallery and sound

Example, BMW M135i F40 OPF back with rear box delete

Example, BMW M135i F40 cat-back with rear silencer delete

Search terms customers use

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