Exhaust› Exhaust Pipes, Systems and Components

Dinan

HIGH FLOW MIDPIPE; 340i 440i

$922.17

SKU: D00G D660-0057

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Dinan D660-0057 is a high-flow mid-pipe constructed from T304 stainless steel, featuring 3.25" mandrel-bent piping. It replaces the factory resonators for improved exhaust sound and flow, and results in a 3 lb weight reduction. Designed for bolt-on installation.

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

BrandDinan
Part NumberD00G D660-0057

Videos

BMW 340i Stock Exhaust + Dinan Midpipe comparison

BMW 340i Stock Exhaust + Dinan Midpipe comparison
Bmw 340i F30 Dinan Midpipe/Stock Exhaust short clip

Bmw 340i F30 Dinan Midpipe/Stock Exhaust short clip
2016 BMW 340i stock exhaust vs. stock exhaust with DINAN mid-pipe

2016 BMW 340i stock exhaust vs. stock exhaust with DINAN mid-pipe
340i with DINAN full exhaust (midpipes and muffler)

340i with DINAN full exhaust (midpipes and muffler)
Dinan 340i Exhaust w/Midpipe - Stock vs Dinan - Soundclip

Dinan 340i Exhaust w/Midpipe - Stock vs Dinan - Soundclip
LOUDER! - Dinan Midpipe Install //BMW M240i

LOUDER! - Dinan Midpipe Install //BMW M240i

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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