Kawasaki KFX 400 ATV Full Single Inframe Exhaust System

Barker's Exhaust

$ 589.00

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  • Up to 3.5 Horsepower gain (over10%)
  • 2.5 to 4 ft-lbs. Torque increase
  • Substantial weight reduction over the stock system
  • 103 dB Sound without quiet core
  • Significant low-end torque gain
  • Huge gains in the over rev
  • Fits all KFX 400 models
  • Available in a brushed aluminum or black powder coat finish
  • Billet clamps available in red, blue, or black
  • Optional Add-Ons: Quiet Core; Spark Arrestor; Ceramic Coating; Complete Repack Kit


Whether you’re taking on the dunes or the track, the Kawasaki KFX 400 is an incredibly fun sport ATV to ride! With its high-tech, 4-stroke engine, and impressive handling and agility, the Kawasaki KFX 400 is reliable and fast under most any riding conditions.

Take your Kawasaki KFX 400 to the next level by installing a Barkers Full Single Inframe Exhaust System! Achieve increased power and torque throughout the entire power curve while eliminating that sudden fall-off that afflicts most stock systems. The Barkers Full Single Inframe Exhaust System was designed to install easily and is the quickest, most cost-effective improvement you can make to your Kawasaki KFX 400 to increase performance. Install a Barkers Full Single Inframe Exhaust System on your KFX 400 and you will feel it come to life. Hear your new system growl a deep, throaty sound signature only to Barkers. 

All of our systems are made of premium materials that are hand welded right here in the USA. While most other systems can be manufactured robotically, Barkers Systems must be skillfully hand welded one-by-one. Built for the long haul and increased overall performance, we never sacrifice quality. The exhaust pipe portion of your new system is comprised of 304 stainless steel that is Tig-welded with seam-reduced interior surfaces for smooth flow. The can is made of 6061-grade aircraft aluminum that comes in a brushed aluminum finish. You can, however, choose to have the can powder-coated in a black finish for added character. Finish your new system by selecting which color Barkers tag you would like. You can choose black, blue, red or yellow. Billet clamps are included with your purchase to harness your new system to your machine. Color options include black, blue or red. 

Other options for the Kawasaki KFX 400 exhaust system are the Barkers Quiet Core Insert and Spark Arrestor. The Quiet Core Insert will help to reduce sound by up to 5 dB and is perfect for those sound sensitive areas. With only a loss of .5 to 1.5 hp, you may even decide to ride with them in all of the time! The Barkers Spark Arrestor will assist in keeping our trails safe by disabling any flammable debris from exiting the exhaust.  

For serious riding, we highly recommend purchasing a fuel controller for your new system. A fuel controller will drastically improve the way your new exhaust system and KFX 400 performs. As your new system will require the added fuel flow, a fuel controller is essential for your KFX 400 to perform at it’s best. For optimal results, your dealer or a skilled technician should program the fuel controller prior to installation. If you are interested in learning more about why you should purchase a fuel controller, please feel free to call us! We promise you will talk to a real person who knows all about it!

At Barkers, we have an extreme amount of dedication and respect for the off-road lifestyle. And we understand that owning and maintaining a performance vehicle is no joke. That is why you can expect only the best in Barker's craftsmanship and design. All Barker’s exhaust systems carry a limited one-year warranty against defects in workmanship and/or materials. See Barkers Terms & Conditions.


We recommend that you monitor and check the packing in your muffler after every ride. The length and time your packing will last will vary depending on how and where you ride. When you first notice any sign of the packing depleting within the can, it's time for a repack. Packing will wear out slowly over time, starting at 100% packed. It is normal for an absorption style high-performance muffler to lose packing but once you lose more than about 10-15% of your packing it will deplete faster and faster since it can now move around in the can. It is imperative you do not allow the packing to deplete too far. If your muffler becomes very loud or you hear rattling around inside the can you have completely depleted the internal packing and should not ride the machine until the muffler is repacked with a fresh pillow. Order new packing before you need it!

The Barker's Exhaust Complete Repack Kit is designed to make repacking your Barker's Exhaust Can simple.

Suggested add-ons: Quiet Core Insert; Spark Arrestor.