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Magnaflow Competition Exhaust System 15234

Product Information
List Price:
Our Price:
Part #:
Single Staight Passenger Side Exit
Pipe Size: 2.5" | 3.25" x 4.75" Tip
2013-2015 Honda Civic Sedan, Si, 2.4L L4
  • Aggressive interior and exterior note
  • May not comply with local or federal noise requirements


  • Constructed of T-409 stainless steel
  • Large, straight-through design reduces exhaust flow restrictions, boosting horsepower and torque
  • Mandrel bent tubing allows for improved exhaust flow, improving performance
  • Competition series systems deliver an aggressive, throaty exhaust note
  • Designed to reduce irritating drone inside the vehicle
  • Baked by a lifetime warranty
  • Ships same day if order is placed by 1:00 PM CST
  • Made in the USA – Oceanside, CA

Congrats, you've successfully found the best diesel exhaust system on the market. Magnaflow Performance Series diesel exhaust systems are the top-tier line offered by Magnaflow. Looking for outstanding performance, looks, durability and sound? Check, check, check, and check.

Constructed of 100% T-409 stainless steel, Competition Series exhausts are going to look great, as well as being ultra-durable. Magnflow uses mandrel bent tubing to increase exhaust flow, which in turns helps to boost performance. An engine that can breathe is a happy engine, and factory exhaust is designed to perform adequate as well as being cheap to mass produce. Adequate and cheap? Not something you want describing you're truck's exhaust. Competition Series systems feature a straight-through design muffler, that further reduces flow restrictions, allowing for even better performance. The competition series exhaust delivers a more aggressive exhaust note than it's Performance series brother. A lot of research goes into designing an exhaust system that sounds perfect. Magnaflow doesn't miss the mark with the Competition Series.

So, if you're ready for an aggressive exhaust system on the market, don't look any further. Magnaflow Competition Series exhaust systems are going to sound great, increase horsepower, stand up to the rigors of the road, and look great all at the same time. Get yours today, and get on the road!

View Available Part Numbers For This Product Line


What are the primary differences between the Magnaflow diesel exhaust systems? Glad you asked…

Magnaflow Performance Series Diesel Exhaust System

Top of the line exhaust system from Magnaflow. Includes polished stainless steel muffler, and double-walled tip for non-DPF applications, and polished stainless steel muffler, muffler-delete pipe, and stainless steel inter-cooled tip for DPF applications. If you want the best, this is a good place to start.

Magnaflow XL Series Diesel Exhaust System

Second tier exhaust from Magnaflow. Very similar to the Performance Series, but without the bells and whistles. Non-DPF applications include satin finished stainless steel muffler and a single wall, clamp-on tip. DPF applications include satin finish stainless steel muffler, muffler-delete pipe, and inter-cooled tip.

Magnaflow Pro Series Diesel Exhaust System

Pro Series allows for more customization, and is available in stainless steel as well as aluminum. Non-DPF applications include muffler, satin finish stainless steel or aluminum, but do not include exhaust tip. DPF applications includes a muffler-delete pipe, and an inter-cooled tip, but does not include a muffler.

Magnaflow Custom Series Muffler Delete Diesel Exhaust Systems

This series allows for the most customization of any line. Available in stainless steel or aluminum, the Custom Series is perfect for the builder who wants to choose their own converter, muffler and tip. Only available for non-DPF, includes a stainless steel or aluminum muffler-delete pipe, but does not include tip. Ready to put your personal stamp on an exhaust, this is a great place to start.

Magnaflow Black Series Diesel Exhaust Systems

The Black Series is the same exhaust system as the premier Performance Series, except it has a high-temperature satin black ceramic applied from the tail pipe to tip. Includes polished stainless steel muffler, and double-walled tip for non-DPF applications, and polished stainless steel muffler, muffler-delete pipe, and black ceramic coated inter-cooled tip for DPF applications.

Magnflow Off-Road Pro Diesel Exhaust Systems

Built for the off-roader in mind, the Off-Road Series is built using stainless steel, includes a satin finished stainless steel muffler, but does not include a tail pipe. This line features a turn down tip, which is ideal for vehicles were tail pipe clearance could be reduced because of heavy trailering. The Off-Road Series is only available for non-DPF applications. Planning on bouncing around off-road and don’t want to wreck your exhaust, get the right exhaust, and stop worrying.


Limited Lifetime Warranty

The manufacturer warrants that all Magnaflow Performance products are free from defects. Most of Magnaflow mufflers* are warranted against blowouts and defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. The warranty is void if the muffler is not installed properly on the vehicle for which it is designed.


Magnaflow Competition Series exhaust systems are easy to install right at home. There's no need to drill or cut - unless your old exhaust rusted on, then you might have to cut that sucker off - during installation. If you have any questions, give us a call at 877-216-5446.

PDF Icon Magnaflow 15234 Installation Instructions