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ARM

4-Inch to 2.5-Inch Catless Downpipe

$227.00 $217.00 Save $10.00

SKU: N20DP

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Muffler Shop N20DP is a catless downpipe designed to optimize exhaust flow for N20-powered BMW vehicles. Constructed from mandrel-bent SS304 stainless steel, it features a 4-inch turbo v-band connection that reduces to 2.5 inches to match stock midpipes.

This downpipe includes two O2 sensor bungs for factory sensor reinstallation. Professional tuning or a CEL delete is required to prevent a check engine light.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandARM
Part NumberN20DP
CategoryExhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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