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Exhaust› Exhaust Pipes, Systems and Components

Dinan

FREEFLOW EXHAUST G20 330I

$1,968.95 $1,849.95 Save $119.00

SKU: D00G D660-0091

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: D660-0091

Delivering on the promise of performance (and sound) without sacrifice, the Dinan G20 330i / G22 430i exhaust not only grants the B46/B48 4-cylinder improved exhaust flow by reducing back pressure but also imbues the platform with a deeper and fuller note, free of any added drone or other negative side effects commonly associated with aftermarket exhausts. The goal of OEM+ and then some, realized.

Features:

  • Maximum gains of +4 HP and +3 ft-lb of torque
  • Enjoyably louder, sportier sound
  • Drone abatement technologies used to reduce cabin resonance
  • Dual 4" (102mm) double-walled, polished clamp-on tips with laser engraved Dinan logo
  • Larger diameter piping for increased flow (85mm to dual 60mm vs. 85mm to dual 83mm)
  • 100% 304 Stainless Steel construction
  • Retains factory valve control
  • Factory-like fitment with included mounting hardware

Stainless Steel - Polished Tips - G20/G22

MIA's Description

The Dinan D660-0091 Free Flow Valved Axle-Back Exhaust system for BMW enhances exhaust note and performance with a valved design, allowing for an aggressive sound under acceleration and a quieter tone at cruise. It features either polished or ceramic black tips and is constructed from T304 stainless steel with a brushed finish. This system is engineered to reduce back pressure and improve exhaust flow, contributing to modest horsepower and torque gains. It is a direct bolt-on installation using factory hangers, requiring no cutting or welding.

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 D660-0091

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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