Sale

Exhaust Exhaust Pipes, Systems and Components

Dinan

FREEFLOW EXHAUST G20 M340i; BL

$2,536.95 $2,399.95 Save $137.00

SKU: D00G D660-0085-BLK

In Stock
In Stock
Ships by Sep 18
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

Constructed from 304 stainless steel for durability and corrosion resistance, it features a dual-in/four-out configuration with a split rear exit and four 4" black, beveled-edge, double-wall tips. This system utilizes OE brackets and hangers for a factory-like installation.
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Part #: D660-0085-BLK

Quad exhaust tips have been a signature feature of the most powerful letter in the automotive sphere for quite some time. It is a hallmark of the brand that Dinan has long embraced, limiting its own quad tip usage to those M cars that already sported like tip quantity from the factory. That is until now with the release of the Dinan axle back exhaust system for the G20 M340i and G2x M440i.

Features:

  • More Power: +6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
  • Enjoyably louder, sportier sound
  • Quad 4" diameter clamp-on, double-walled, ceramic black and laser engraved exhaust tips
  • 100% 304 stainless steel construction
  • Larger diameter piping for increased flow (76mm vs 70mm)
  • 4 lbs lighter than the stock system
  • Stock exhaust valve actuator reused and another valve/actuator added to the opposing side promoting even flow regardless of valve position
  • Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions
  • Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
  • Easy bolt-on installation with included mounting hardware

Stainless Steel - Black Tips - G20 / G22 / G23 / G26

Vehicle Symptoms
  • Stock exhaust too quiet or not sporty enough
  • Unappealing exhaust tip appearance (single or dual tips)
  • Excessive weight from factory exhaust system
  • Lack of aggressive sound at wide-open throttle
  • Drone at low RPM with current aftermarket exhaust
Relevant Conversations
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  • Dinan exhaust sound clip before and after

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandDinan
Part NumberD00G D660-0085-BLK

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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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