Exhaust› Exhaust Pipes, Systems and Components

Pope

3-Inch 304 Stainless Steel Downpipe

$455.89

SKU: PEP_MSP_DP-01

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Pope Engineering Performance (PEP) Mazdaspeed Protege downpipe is a 3-inch exhaust component designed to replace the stock "S" and "J" pipes. It is constructed from 304 stainless steel, including the casting, tube, flange, and flex. This downpipe features a robust design with a 4.5 mm wall thickness on the casting for strength.
Show original supplier description
The Pope Engineering Performance (PEP) Mazdaspeed Protege downpipe is a 3-inch exhaust component designed to replace the stock "S" and "J" pipes, offering a one-piece, robust design and construction. Fabricated entirely from 304 stainless steel, this includes the casting, tube, flange, and flex, ensuring durability. The casting boasts a substantial 4.5 mm wall thickness for exceptional strength. Installation of this downpipe requires only one modification: the removal of the tab on the AC compressor. The kit includes a hardware kit with a 3-inch exhaust gasket and necessary bolts, along with a thermostat spacer. This aluminum 1/2-inch thick spacer is designed to adjust the water neck clearance, accommodating the stock lower radiator hose and coming with gaskets and hardware. An optional upgrade to the SpeedCircuit Thermostat Outlet kit offers a more refined solution with a new silicon radiator hose. While it can be installed with a stock midpipe, this is not recommended due to the potential for leaks and installation difficulties. For optimal results, it's advised to tighten exhaust flanges from front to back to ensure proper alignment and prevent leaks at the downpipe to midpipe connection. Following installation, a test drive is recommended to check for boost spikes, which can occur due to faster turbo spooling and may require vacuum line rerouting. Ensure the swing valve does not contact the downpipe; if it does, porting the downpipe inlet may be necessary.

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

BrandPope
Part NumberPEP_MSP_DP-01
CategoryExhaust
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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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