cp-e QKSpl Downpipe CATTED Mazdaspeed 3 2007-2013

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cp-e QKSpl Downpipe CATTED Mazdaspeed 3 2007-2013

MSRP: $830.97
( saved $41.55 )
4 reviews Write a Review


*Close to +20HP at the Wheels
*No power loss in lower RPMs
*Fits the stock catback exhaust
*Extra O2 bung for adding a wide band sensor
*Cast Stainless Steel Flange
*Cast Bellmouth
*Industry-leading stainless steel flex joint
*Stainless Steel honeycomb high flow cat (optional)
*Full 3.00” mandrel bent 304 stainless steel
*Included cp-e™ Tuneable O2 Sensor Kitwith Off-Road Downpipe
*Made in the U.S.A.
*LIFETIME Warranty

The cp-e™ MS3 downpipe replaces the choked factory pipe and its two restrictive cats with one high-flow cat and a 3? mandrel bent pipe. The catalytic converter features a high-flow, all metallic honeycomb design, making it one of the most durable converters on the market. The result of our efforts is reduced backpressure, decreased turbo spool time, increased horsepower and a more aggressive sound. For the greatest dose of great sound and power, option for the downpipe without a catalytic converter, though keep in mind that a cat free downpipe is for off-road use only.

Although more power and great sound are high priority items when buying a 3? downpipe, the fine details are what ensure that the product will satisfy the end-user for a lifetime.

The cast bellmouth piece on the downpipe ensures smooth flow and transition. The downpipe includes three Oxygen Sensor bungs – two for the factory sensor and another to add an aftermarket wideband. Our Off-road version also includes the cp-e™ Tunable O2 Sensor kit to eliminate the unwanted check engine light.

The downpipe comes complete with all necessary hardware required for a complete and professional installation, is made in the U.S.A, and includes a full lifetime warranty.

Mazdaspeed 3
cp-e Limited Warranty

4 Reviews

  • 5

    Posted by Anthony on Jun 17th 2021

    Amazing product , quick on time shipping , works exactly how described

  • 5
    CPE Downpipe

    Posted by Jordan on Jun 13th 2021

    Amazing product, fits great and sounds incredible. It also was fairly simple to install once the stock stuff is out.

  • 5

    Posted by James Swangler on Apr 2nd 2020

    Good fitment

  • 5
    Lifetime Warranty!!!

    Posted by Unknown on Oct 20th 2018

    Installed for 3+ years now. Install is in a tight area but otherwise just nuts and bolts. Bolted to OEM cat back with 3in intake 21 pounds via Freektune. Has been rock steady all throughout. Even with the stock cat-back sounds great and people ask if I have a cat back ... nope. Look stock & ready to rock!