• 15+ Years of Performance Parts, Tuning & Installation
  • Photo - Primary
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • Photo - out of package
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • Photo - out of package
  • 360 Degree Image Set
  • 360 Degree Image Set
  • Photo - out of package
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • 360 Degree Image Set
  • Logo Image

MagnaFlow MF/R Series 5in Round 304SS Performance Exhaust Muffler

  • Backed by real installs and tuning experience at FAST of West Chester
Out of stock

Everyday Low Price:

$839.00
$839.00 $1,160.44 You Save $321.44!
Shipping calculated at checkout.

Get it fast — Order now.

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Earn FAST WC Points on this order — redeem on your next purchase
Sorry, it's out of stock.

But we can let you know when it's back in.

Up to 28% offSold out

The MagnaFlow 17169 MF/R Series 5 in. Round body is a purpose built competition muffler kit engineered to survive and perform in the most demanding high output race environments. Its design and durability have been proven through extensive real world race testing conducted in collaboration with Camburg Engineering and validated under aggressive competition conditions by Camburg Racing. Its straight through perforated core, stainless mesh wrap, and continuous roving high temperature insulation fill form a two stage packing system designed to maintain unrestricted flow under sustained heat and pressure while controlling the distracting NVH that slows drivers down, verified through professional testing by Camburg Racing. Single piece billet 304 stainless steel TIG welded end caps with integral V band flanges deliver uncompromising rigidity, leak proof reliability, and the kind of mechanical stability required for repeated wide open throttle abuse. The 16 gauge 304 stainless steel tubular body features internal expansion capability and 3 in. / 3 in. connections, enabling 17169 to handle extreme exhaust mass flow, shock loading, and high cycle thermal stress without fatigue or performance fade. Fully reversible, it integrates cleanly into diverse layouts where packaging, flow direction, and thermal management are critical. Professional installation is recommended, and users should verify compliance with local noise regulations. For installation, the kit includes keyed flanges for precise orientation and V-band clamps for a secure, repeatable seal. Built from corrosion resistant 304 stainless steel and manufactured using CNC robotic precision welding, the MagnaFlow 17169 MF/R Series is a race proven, competition grade muffler kit engineered with direct input from off-road racing professionals and designed for teams and drivers who demand uncompromising performance.

  • Billet End Caps with Integral V-Band Flanges
  • TIG Welded 304 Stainless Steel Construction
  • Race Proven High-Output Flow
  • Tuned Internals Reduce NVH
  • Earn FAST points on this part!
  • Backed by real-world installs
  • FAST WC Team Approved

Why Drivers Choose FAST of West Chester

  • I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
    support my builds going forward.

    Donald Wojnar

  • I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.

    Adam Cranston

  • The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.

    Bryce Budd

  • This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.

    William Brunell

  • Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
    and what I needed to get where I want to be with it. I'd recommend them
    to any car enthusiast.

    Devin Greco

Does it come with a warranty?

Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

Do you offer installation help or advice?

Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

How fast is shipping?

Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

What’s your return policy?

Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

Unlock 200 FAST Points Today!
Create your free account and get 200 FAST Points instantly.

🎉 Claim My 200 Points Now