Vehicle-Specific Cat-Back Systems

When the piping, brackets and mufflers fit your car model directly, the exhaust from the catalytic converter back can typically be replaced without bending or welding pipes. This category brings together vehicle-specific cat-back systems for you who want to change the sound and look of your car or pickup with a solution made for exactly your model.

How to choose a vehicle-specific cat-back system

A cat-back system replaces the pipes and mufflers from the catalytic converter back. Because the systems are built for a specific model, they typically follow the original pipe routing and use the vehicle's existing hangers. The category covers both pickups such as the RAM 1500, GM 1500 and Ford F250/F350 and passenger cars such as the Dodge Charger SRT-8, with systems from brands including Magnaflow, Borla, aFe, Gibson and AWE Tuning.

• Fitment: Check the model year, engine, cab and bed length. Some systems only fit specific versions, e.g. only Extended Cab or only Crew Cab and Double Cab.
• Pipe diameter: The systems are available in, for example, 3.5 and 4 inches. A larger diameter does not automatically mean more performance; it depends on the engine, power goals and the rest of the build.
• Sound and exit: The muffler design and the choice between single or dual exit affect both sound level and look.
• Material and finish: Aluminized and stainless steel resist rust differently, and a polished finish requires more care to keep its shine.

Installation is typically done with bolts and clamps, but old bolts under the car may be rusted solid. Use new gaskets and check the joints after the first few drives so they don't start leaking. If there is no system for your model, universal cat-back kits can be adapted, and in the parent category you will find all cat-back systems in one place.

Frequently asked questions

Can a vehicle-specific cat-back system pass inspection in Denmark?

It depends on the specific product and your car. Check for the individual part number whether E-mark approval or other documentation is included, and whether the noise level meets the requirements. No product series is automatically approved for road use.

Does the engine management need to be adjusted after installing a cat-back system?

The system sits after the catalytic converter and therefore typically does not affect the oxygen sensors or the catalytic converter. Whether a tune makes sense depends on the product and the other modifications in your build.

What is the difference between a vehicle-specific and a universal cat-back system?

A vehicle-specific system is bent to match the vehicle's pipe routing and hangers and can typically be installed without modification. A universal kit often requires cutting or welding, but gives you the freedom to route the piping yourself.