• M274 Stage 2+ bundle for Mercedes C300 W205, E300 W213, GLC300 X253 - catless downpipe + custom ECU tune + K&N high-flow air filter + upgraded diverter valve DV+ - 320 HP / 340 TQ
  • Catless downpipe for Mercedes C300 W205, E300 W213, GLC300 X253 M274 engine
  • K&N high-flow air filter for M274 engine in Mercedes C300, E300, GLC300
  • Custom ECU tune OBD2 flashing cable for Mercedes C300 W205, E300 W213, GLC300 X253 M274 Stage 2
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BenzUnited Parts

C300 E300 GLC300 M274 Catless Downpipe + Stage 2 Tune Bundle | W205 W213 X253

C300 E300 GLC300 M274 Catless Downpipe + Stage 2 Tune Bundle | W205 W213 X253

$1,795.00 USD
$1,795.00 USD
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Sick of your C300/E300/GLC300 feeling underpowered?
Get instant throttle snap, massive mid-range torque, and turbo whoosh + pops — all reliable, CEL-free.
Stage 2+ bundle: Up to 320 HP / 340 TQ on pump gas.

Best Bang for the Buck

Bolt-on + remote custom tune = huge gains, no shop time. Proven on real M274 cars.

What's in the Bundle

  • Catless downpipe (T304 SS, bolt-on)
  • Custom remote ECU tune (no CEL, 91/93 maps)
  • OBD2-to-USB flashing cable
  • Guides + lifetime support

What You'll Feel

  • Up to 320 HP / 340 TQ crank
  • +45–80 hp / +60–100 lb-ft gains
  • Lightning throttle + fast spool ⚡
  • Throatier exhaust, low drone
  • Pops & bangs on overrun (opt.)
  • Home flash in 30–60 min

Fitment

Model Years Engine
C300 (W205) 2015–2021 M274 2.0T
E300 (W213) 2016–2021 M274 2.0T
GLC300 / 4MATIC (X253) 2016–2022 M274 2.0T

U.S.-spec M274 only. Confirm engine code & exhaust.

Pro install & dyno check advised. Gains vary. Off-road/race use only in strict emissions areas.

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