Mercedes C250 & SLK250 M271 Performance Upgrades

M271 · 1.8L Turbo

Mercedes C250 & SLK250

M271 Performance Upgrades

Curated performance upgrades for the M271 platform.
Every product chosen for one car. Yours.

C2502012–2015
SLK2502012–2015
M2711.8L Turbo

The Collection

What's Inside

Every product here is selected specifically for the M271 platform. No universal-fit compromises, no guesswork on fitment — just upgrades that belong on your car.

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ECU Tune

A fully custom calibration built from your own stock ECU file. Tailored around your specific mods, fuel grade, and how you actually drive — not a one-size-fits-all flash.

Shop ECU Tune →
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High Flow Air Filters

A direct drop-in upgrade over the factory filter. Improved airflow through the intake system with zero modifications and no tools required.

Shop Air Filter →
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Diverter Valves

A direct replacement for the factory plastic unit — a known weak point on the M271. Eliminates boost leaks and delivers a more consistent turbo system under pressure.

Shop Diverter Valves →

Why BenzUnited

Platform First. Always.

We don't try to cover every car. We go deep on specific platforms so everything we carry is right the first time.

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M271 Specific

Every product is chosen for the C250 and SLK250. Nothing universal, nothing that just "might fit."

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OEM Safe

All upgrades are designed to work within factory tolerances. Your drivetrain stays protected.

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1-on-1 Support

Not sure what to order first? Email us and we'll walk you through what makes sense for your setup and goals.

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Easy Installation

Every product in this collection installs without special tools or shop time. Straightforward from the start.

Not Sure Where to Start?

Tell us your setup and we'll point you in the right direction.

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Mercedes C250 upgrades, SLK250 upgrad