4.5 Inch FWD 2.0T Audi 8V A3 Downpipe & VW Golf Mk7 Downpipe - ARM Motorsports

The ARM MK7 4.5" GTI Downpipe & Audi A3 8V 2.0T Downpipe is engineered to deliver maximum performance. Featuring a full 4.5" mandrel-bent body, this is the largest and most effective downpipe available for the A3 8V & MK7 platform. Whether you're running the stock IS20, upgraded IS38, or a hybrid turbo, this downpipe supports your build with unrestricted exhaust flow and a commanding exhaust tone.

The restrictive stock downpipe on the EA888 platform creates excessive back-pressure, increasing turbo lag and limiting tuning potential. Replacing it with the ARM MK7 4.5" Downpipe significantly reduces back-pressure, enabling faster turbo spool, increased power and torque, and a notably improved exhaust note.

PERFORMANCE & SOUND

The ARM 4.5" Downpipe doesn't just improve performance—it transforms your driving experience. You’ll enjoy a deep, aggressive exhaust tone under acceleration with no unwanted drone during cruising.

Pairing this downpipe with Stage 2+ tuning software unlocks its full potential, with gains of up to:

• +60whp / +105wtq on the stock IS20 turbocharger.

Note: Most tuners require an upgraded downpipe for Stage 2+ tuning, especially when running over 25 PSI. Running aggressive tunes on the stock downpipe is not recommended due to increased strain on the turbocharger.

CONSTRUCTION & DESIGN

• Material: High-grade T304 stainless steel with precision TIG welds

• Structure: Single-piece design eliminates common leak and fitment issues seen in multi-piece downpipes

• Mounting: CNC-machined flange and laser-cut mounting brackets for exact OEM fitment

• Heat Management: Integrated cutout ensures clearance around the ABS module, preventing heat-related component damage

• Flex Section: Stainless steel flex joint reduces torsional strain on the turbo during aggressive driving

• Adapter Compatibility:

  • 2.5" reducer for stock exhaust

  • 3" adapter for upgraded cat-back systems

  • CNC-machined v-band clamp ensures a tight, reliable seal

IN THE BOX

• ARM 4.5" Downpipe

• Stock Exhaust Reducer (2.5")

• Upgraded Exhaust Adapter (3")

• V-Band Clamp

FITMENT GUIDE

Compatible with the following 2.0T Gen 3 platforms:

• Volkswagen Golf VII Hatchback (2.0T Gen3)

• Volkswagen Golf VII Facelift FWD (2.0T Gen3)

• Volkswagen Jetta VII / GLI FWD (2.0T)

• Audi A3 8V FWD (2.0T)

ARM MOTORSPORTS LIFETIME WARRANTY

Every ARM Motorsports product is backed by our Lifetime Warranty, automatically activated at the time of purchase. This warranty covers defects in craftsmanship or fitment and qualifies you for a replacement unit if needed.