• 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

2.25" X-Pipe for Mercedes NA – Replacement for Secondary Cats

2.25" X-Pipe for Mercedes NA – Replacement for Secondary Cats

$36.99 USD
$50.00 USD $36.99 USD
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Old-school principle, modern execution: a forward-placed X-merge balances pulses, kills rasp, and frees top-end on naturally aspirated Benz engines. Sized dual 2.25" I.D. and meant to be welded in where the 2nd cats live. Placement matters: earlier = real scavenging; later = mostly sound change.

  • Real gain where it counts: cleaner tone, reduced drone, stronger pull up top*
  • Correct size: dual 2.25" I.D. for NA M112 / M113 / M272 / M273 / M276
  • Material: 409 stainless — heat-cycle tough and weld-friendly
  • Install: universal weld-on; place the X just after the collectors/2nd-cat window
  • Support: ships in 1 business day • 1-Year replacement warranty
M272 V6 NA

Forward X at 2nd-cat spot = cleaner pulses, less rasp, better top-end.

Tuning · Flap Repair Kit · Induction Upgrade · K&N Filters

M273 5.5L NA

New-gen V8 with flap manifold. 2nd-cat delete + forward X = freer top-end.

Tune (must-have) · Flap Repair Kit · Headers · K&N Filters

M112 V6 NA

Forward X balances banks, trims drone, and carries pull to redline.

C240 / C320 Headers · M112 Tuning · K&N Filters

M113 5.0L NA

Forward X in 2nd-cat location = smoother pulses, zero boom, real top-end.

Tuning · Headers · K&N Filters

Specs

Material 409 Stainless Steel (polished exterior)
Size Dual 2.25" I.D. (each side)
Overall Length / Width ~12" length • ~6.5" width (minor manufacturing variance)
Install Weld-on; place just after collectors/2nd-cat window for best scavenging
Fitment Universal dual systems; optimized for M112 • M113 • M272 • M273 • M276
Quick guidance: keep pipe lengths similar into the X; earlier placement = hotter/faster exhaust = stronger scavenging + cleaner tone. Ask your fabricator for back-purged TIG if available. *Results vary by tune, condition, and overall system.
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