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Exhaust› Exhaust Pipes, Systems and Components

MAPerformance

WRX Rev 4 Catted Downpipe

Name: WRX Rev 4 Catted Downpipe
Brand: MAPerformance
SKU: MAP WRX-4G-DPC-REV4

$827.99 $727.49 Save $100.50

SKU: MAP WRX-4G-DPC-REV4

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$100 Minimum Order

Non-Returnable Item

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Moderate — 2–4 hours

Overview

The MAPerformance WRX Catted Downpipe Rev 4 is a performance exhaust component designed to increase horsepower and torque. It features a 3.5" bell mouth that reduces to 3" to decrease exhaust restrictions. Constructed from 304 stainless steel with mandrel-bent tubing, it offers superior corrosion resistance and optimized flow.

It is 100% made in the USA.

Show original supplier description

The MAPerformance WRX Catted Downpipe Rev 4 is engineered to replace the restrictive factory downpipe on your 2015-2021 Subaru WRX MT, aiming to significantly improve exhaust flow and unlock more power. Constructed from durable 304 stainless steel, this downpipe features a 3.5-inch bell mouth that tapers to 3 inches, minimizing backpressure. The use of mandrel-bent tubing throughout ensures a smooth path for exhaust gases, while a stainless steel flex section enhances longevity by accommodating engine movement. This downpipe is compatible with both factory and aftermarket cat-back exhaust systems. Customers must specify their cat-back type via a dropdown menu during ordering. Please note: This product will not fit CVT models.

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

Brand	MAPerformance
Part Number	MAP WRX-4G-DPC-REV4
Category	Exhaust

Videos

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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