Exhaust Pipes

BBK Varitune cat back exhaust systems feature BBK Varitune mufflers that have a patented adjustable power valve inside that allows full adjustment of the exhaust flow through the mufflers chambers for a great sound and added performance. This adjustment is made at the rear of the muffler with a wrench by either moving the valve in or out. Once you are happy with the level of sound, it is locked in place with the Varitune locking nut. All of the Varitune power valves are made with stainless steel for lasting durability and smooth operation. These patented BBK Varitune exhaust systems allow you to personalize the power and sound levels of your car 8-10 decibels and 10-15 horsepower. This kit is built with aluminized steel with brushed stainless steel tips. Each Kit is a direct bolt on replacement for the restrictive factory exhaust. NOTE: Does NOT fit convertible applications.

Additional Information

Vari-Tune Adjustable Cat Back Exhaust System; 3in. Pipe; Incl. 2 Varitune Adj. Perf Mufflers/High Flow Resonator Delete X Pipe/Hardware/Hangers/Clamps/4in. Brushed Stainless Tips;

Application Summary

THIS BBK VARITUNE CAT BACK EXHAUST SYSTE

Part Type

Exhaust System Kit

• 4.0" Brushed Stainless Steel Tips - Direct Bolt On 2-3/4" Cat Back Exhaust Kit - BBK Varitune Mufflers Have An Internal Power Valve That Allows Fine Tuning of Sound and Power Levels - Includes Resonator Delete Pipe
• Made In The USA

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Exhaust System, VariTune, Dual, Two Tunable Mufflers, Cat-Back, Stainless Steel, With Tips, Ford, Mustang, 5.0L Coyote, Kit

BBK VariTune axle back exhaust systems offer full tuning ability. Featuring BBK's patented adjustable power valve, the systems come complete with two tunable VariTune performance mufflers engineered with the high-flow direct fit stainless steel tubing and hardware for an easy bolt-on installation. They include a pair of stylish 4 in. stainless tips to deliver good looks along with maximum performance. The performance mufflers that can be adjusted for sound and horsepower, from underneath the car, by simply moving the adjustment screw in or out. VariTune mufflers utilize a unique internal power valve that when in the closed position blocks the exhaust flow, forcing it through all three chambers of the muffler for a classic mellow sound. When in the open position, the valve opens the exhaust flow allowing it to take the path of least resistance, acting more like a straight-through muffler for an aggressive throaty exhaust note. Simple, yet effective, the BBK VariTune rear axle back exhaust systems deliver the most performance, while allowing you to tune to the desirable level.