• 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

$39.95 USD
$50.00 USD $39.95 USD
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Old‑school principle, modern execution: a forward‑placed X‑merge balances pulses, cleans up 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, less 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; set 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, 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 (allow small manufacturing variance)
Install Weld‑on; set 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 gas = stronger scavenging and cleaner tone. Ask your fabricator for back‑purged TIG if available. *Results vary by build, tune, and overall system.
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