• 2.25 inch universal weld-on exhaust X-pipe, dual 2.25 to 2.25 crossover, top view
  • 2.25 inch X-pipe detail collage showing heat-resistant design and anti-deformation features
  • 2.25 inch X-pipe installed examples undercarriage, universal dual-exhaust crossover
  • 2.25 inch dual-to-dual X-pipe product profile, universal exhaust crossover
  • 2.25 inch X-pipe installation steps—clean, slide on, weld for secure fit
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BenzUnited Parts

M273 5.5L V8 X-Pipe • E550 • CLS550 • SL550 • S550 • CL550 (2006–2011)

M273 5.5L V8 X-Pipe • E550 • CLS550 • SL550 • S550 • CL550 (2006–2011)

$36.99 USD
$50.00 USD $36.99 USD
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Emissions Notice — Depends On How It Is InstalledThis is a universal weld-in crossover pipe, not a bolt-in cat-delete section. If it is welded in place of the factory catalytic converters, the vehicle no longer carries its complete emissions system: it will not pass an emissions or OBD inspection, it holds no CARB Executive Order, and it is not legal to operate on public roads in the United States. Installed downstream of the factory catalytic converters with the cats left in place, it removes no emissions equipment. Where it goes is decided at installation — the buyer and installer are responsible for compliance with all federal, state, and local emissions law.

M273 5.5L V8 X-Pipe • E550 • CLS550 • SL550 • S550 • CL550 (2006–2011)

2.25" Dual High-Flow X-Pipe • Perfect for M273 Performance Upgrades

Shift your M273 5.5L V8 power band higher and feel stronger torque at the top end. This high-flow X-pipe is engineered specifically for M273 performance builds — reducing rasp, balancing exhaust pulses, and delivering noticeably more torque and power at higher RPMs when paired with headers or tuning.

Why M273 Owners Choose This X-Pipe

  • Forward-placed X-merge creates a clear power band shift with stronger pull at higher RPMs on M273 engines
  • Dual 2.25" I.D. optimized for M273 naturally aspirated and supercharged builds
  • 409 stainless construction — weld-friendly and heat-cycle tough
  • More usable torque and extended power at higher RPMs on tuned M273 5.5L V8s
  • Perfect complement to M273 ECU tunes, headers, and intake upgrades for peak top-end performance

M273 Compatibility

Model Years
E550 • CLS550 • SL550 2007–2011
S550 • CL550 2007–2011
CLK550 • ML550 2006–2011

All M273 5.5L V8. The R350 uses the M272 3.5L V6 and is not covered by this listing.

Need help with your build? Message us your vehicle — we’ll recommend the perfect setup.

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