(888) 228-7435

Chevy C6 Corvette PRT Axle Back Exhaust System – Inc Grand Sport (Round Tips) #FCOR-0525


Product Details

Chevy C6 Corvette PRT Axle Back Exhaust System – Inc Grand Sport (Round Tips) #FCOR-0525

The Billy Boat Exhaust PRT C6 exhaust system is the latest in resonance control technology from BBE. Completely redesigned and reengineered for the C6, the system is simple in design, though more complex in theory. You can now have a mellow, no-drone sound at cruising speeds and a crisp, clean, noticeable sport note when you’re tearing up the streets. The PRT comes complete with a true straight-through exhaust passage under aggressive driving conditions, though a mellow sound is emitted at cruising speeds thanks to the unique Purge Chamber.

The fact that the PRT C6 exhausts do NOT have that unpleasant DRONE was the most popular aspect of our Purge Resonance Technology. This was usually shared with an appreciation of how you (or whoever’s driving, really) have so much control over your C6 exhaust system, both in sound and in the correlating performance and driving experience.

Because we’ve been so closely connected with Corvette excellence, we aim to show our dedication by putting our absolute best into every hand-made–never outsourced, always in the United States, stainless-steel C6 system that we make.

  • 4″ Quad ROUND Double-Wall Tips.
  • Mandrel bent from the highest-grade T-304 stainless steel.
  • Designed, tested, and manufactured to the finest hand-made integrity found in any exhaust system.
  • Limited Lifetime Warranty
product image

product imageproduct imageproduct imageproduct image


Lifetime Warranty

Have more questions? Contact us!

The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket part. READ MORE…



What’s the difference between our exhaust systems?

FUSION Exhaust – NPP Controlled Bi-Modal…Aggressive when Open, Mild when Closed

Billy Boat Exhaust has designed a Fusion NO-DRONE exhaust for the factory NPP and the non-NPP C6 Corvette. On C6 with the NPP option, the butterfly valve in the exhaust is controlled by the ECU. The valve opens based on RPM and throttle position. Our expertise here at BBE is getting the “tone” right for your Corvette, and we think we nailed this one. Even in the closed position, the tone is deeper, louder, and more aggressive. Open the valves, the overall volume and tone increases to the point heads will turn when you drive up.

*Add our FCOR-0468 conversion kit for Corvette models without factory NPP controls. The kits comes complete with all the wiring, remote switch, vacuum line, vacuum accumulator, and vacuum switch needed for installation. Can only be ordered with Fusion Exhaust Systems.

PRT Exhaust – Aggressive Sound at Wide-Open-Throttle, Mild sound at cruise

The Billy Boat Exhaust PRT C6 exhaust system is the latest in resonance control technology from BBE. Completely redesigned and reengineered for the C6, the system is simple in design, though more complex in theory. You can now have a mellow NO-DRONE sound at cruising speeds and a sport note when you’re tearing up the streets. It allows true straight through exhaust passage under aggressive driving conditions, though a mellow sound is emitted at cruising speeds thanks to the unique Purge Chamber. Designed especially for the automatic, paddle shift and cars with headers, this Billy Boat Exhaust PRT system works purely on physics and adrenaline. Increases of 15 hp and 14 ft lbs over stock.

BULLET Exhaust – Aggressive Sound

Billy Boat Exhaust has created a deep, healthy exhaust note at low RPMs with an assertive muscle car roar on acceleration. Not for the weak at heart, the Bullet has quickly become the industry standard for a deep, aggressive muscle car sound on the C6. You can see up to 18 rear wheel horse power and 17 foot pounds of torque from the Bullet. Billy Boat Exhaust’s boldest tip style and configuration insures the C6 will scream ”muscle car”.

product image WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go to www.P65Warnings.ca.gov
YouTube video

Download PDF here… FCOR0525 Layout1

With proper installation, your new Billy Boat Exhaust system will last a lifetime. While installation of this product is very simple and straight forward, there are a couple areas that need some attention. Tools need for installation: Jack/Jack Stands, 18mm Socket or Wrench, 15mm Socket and Wrench, 13mm Socket and 6” Extension #1– It helps to do this installation on a lift if you want to get the factory mufflers out in one piece. If a lift is not available you may have to cut the factory axle hoop away from the muffler. #2– With the car safely lifted and chocked remove the nuts and bolts that hold the roll bar and lower the anti-roll bar from the center chassis mounts. It is not necessary to completely remove the bar; it just needs to be moved in order to get the axle hoops out FCOR-0400install-1 #3– Unbolt the flanges located at the front of the factory center pipe. Then remove the nuts that are holding the spring hangers at the rear of the center pipes. Loosen clamps on rear of center pipe. Pull center pipe back off the donuts at the front of the exhaust system. Lower center pipe down and pull forward off the front of the mufflers and set aside. If you are installing a C6 Fusion system with factory NPP or have a Z06 remove the vacuum lines from the mufflers. FCOR-0400install-2 #4– To remove the mufflers, pull the hangers through the rubber mounts and lower the mufflers down and unwrap from over the axle. You may have to move the mufflers to one side or the other to get them out. #5– Position the new muffler/axle hoop system into place. Then insert the mounting hook into the factory rubber hanger. Mate the muffler/axle hoop system to the center pipe (Billy Boat X-Pipe if used) in the reverse order of removal and just tighten them enough to still allow for movement while aligning the system. *But do not tighten them completely. (Note: if using the BillyBoat center muffler make sure that the gussets are pointed up towards the bottom of the car. Center pipes can be rotated to adjust height of center muffler.) #6– Re-install the anti-roll bar and tighten the upper bolts to 49-ft/lbs. of torque and the lower to 70 ft/lbs #7– With all components in place, use a straight edge along the bottom of the tips for proper alignment. Keeping in mind that it will take some time to align them correctly. FCOR-0400install-3 #8– Start by tightening the flanges in front of the system first and then the nuts, bolts and clamps connecting the muffler sections making sure everything is still in alignment as you work your way to the back. #9-FUSION SYSTEMS ONLY: If your car is equipped with an NPP bi-modal system from the factory or you have a Z06, hook the factory vacuum line to the valves on the Fusion system. #10– Fire the car up and take it for a spin around the block making sure there are no rattles. #11– After logging on a few hundred miles re-torque your work

Billy Boat Exhaust Safety, Installation and Liability Statements

SAFETY: Appropriate disassembly, assembly methods and procedures are essential to ensure the personal safety of the individual performing the kit installation. Improper installation due to the failure to correctly follow these instructions could cause personal injury or death. Read each step of the installation manual carefully before starting the installation.

  • Always wear safety glasses for eye protection.
  • Place the ignition switch in the OFF position.
  • Always apply the parking brake when working on the vehicle.
  • Block the front and rear tire surfaces to prevent unexpected vehicle movement.
  • Operate the engine only in well-ventilated areas to avoid exposure to carbon monoxide.
  • Do not smoke or use flammable items near or around the fuel system.
  • Use chemicals and cleaners only in well-ventilated areas.
  • Batteries can produce explosive hydrogen gas which can cause personal injury. Do not allow flames, sparks or flammable sources to come near the battery.
  • Keep hands and any other objects away from the radiator fan blades.
  • Keep yourself and your clothing away from moving parts when the engine is running.
  • Do not wear loose clothing or jewelry that can be caught in rotating or moving parts.

VEHICLE SUPPORT WARNING: Should the purchaser decide to install this exhaust product at home, be warned that car or light duty truck/van “bumper” jacks are intended for emergency use only. The use of frame contact jack stands in conjunction with a floor jack as main support is highly recommended to minimize accidental dropping of a vehicle while the installation proceeds. We recommend the use of a shop hoist if possible. Please use caution!

GENERAL STATEMENT OF LIABILITY: While we provide information for do-it-yourself installation of exhaust systems and related items, these operations are not without risk. Injury may occur during an installation or exhaust systems and their components may be damaged in the process. We are not responsible or liable for damages that may be sustained to persons or property during an installation. For this reason, we recommend professional installation as the best option when at all possible. While care has been taken in the preparation of the information contained in this web site, Billy Boat Exhaust and BillyBoatExhaust.com does not and cannot guarantee its accuracy. Anyone accessing this information does so at their own risk. It will be assumed that access indemnifies Billy Boat Exhaust and BillyBoatExhaust.com from any and all injury or damage arising from such use.

LOCAL LAWS & LIMITATION OF LIABILITY/DISCLAIMERS: Local Laws & Limitation of Liability/Disclaimers: The regulation of emissions production, noise levels and safety standards is undertaken by the federal government, each of the fifty state legislatures, and by many local municipalities, towns and counties. The manufacturer makes no warranties of merchantability, of fitness for a particular purpose, or that its products are approved for general use, or that its products comply with laws, regulations or ordinances in the states where they may be sold to the ultimate purchaser, the consumer. The entire risk as to the conformity of this product in any such state and as to repair, should the product prove to be defective or non-conforming, is on the retail purchaser, the buyer, the ultimate consumer of such product and it is not upon the seller, distributor, or manufacturer. In this connection, retail purchaser, the buyer, the ultimate consumer assumes the burden of the entire cost of any and all necessary service, alterations, and or repair. The foregoing statement limits the liability of the manufacturer.

If you have any questions please feel free to give us a call. Our direct line to the sales departments is 1-888-228-7435, ext 18. We are in Phoenix, AZ and can be reached 8am-5pm. Should you have questions that images would help explain, please email Mike at mike@bbexhaust.com.

*Please note, we do not follow daylight savings time if you are contacting us outside of Arizona.

We try to put as much information as possible within our product pages to help with application choice and the installation process. The business you purchased our product from can be a wealth of information, but should you need additional help and information, please feel free to call or our sales department.

Monday-Friday 8:30am-5:00pm Arizona time.
888-228-7435 x18 or 623-581-7600 x18

*Note that Arizona does not follow Daylight Savings Time.

More information in additional browser tab.

You Might Also Like:

Newsletter Sign Up