EXTREME: Corsa Xtreme Exhaust For Mustang GT | Corsa Cat-Back Exhaust System 21250

CORSA 3" Cat-Back Xtreme Exhaust w/ RSC® For Mustang

Turn the Coyote loose. CORSA’s 3" cat-back pairs 304 stainless construction with straight-through, custom-tuned mufflers built for the 5.0. Precision acoustic work plus RSC® No-Drone tech means +16 dB of on-command thunder at cold start and WOT—without the highway headache. Flow for days, tone with teeth.

built to howl, tuned to win.

Why It Hits

• 3" T304 stainless: welds that last, fitment that doesn’t fight you.

• Straight-through design: real flow, real gains; ~48% more flow to stack with your other mods.

• RSC® No-Drone: cabin stays calm at cruise; the bark shows up when you ask for it.

• Xtreme sound level: aggressive when it should be, civilized when it needs to be.

• 4.5" dual-wall tips: pick your flavor: slash-cut, straight-cut, or carbon fiber.

• Made in the USA: built right, backed by a Limited Lifetime Warranty.

Power. No pretend.

What It Fits

• Ford 5.0L Coyote platforms — most commonly Mustang GT (S550/S650) and select F-150 5.0 applications by part number.

• Fit varies by chassis, wheelbase/cab (F-150), tip style, and active-exhaust compatibility.

• Pro move: match your exact part number to your vehicle before checkout. If you’re running factory active valves, verify adapter/compatibility in the kit specs.

Product Details:

• Type: Cat-Back
• Exhaust Type: Dual
• Outlet Type: Dual
• Exit Position: Driver And Passenger Rear
• Material: Stainless Steel
• Includes Muffler: Yes
• Sound Level: Aggressive
• Diameter (IN): 3 Inch
• Includes Exhaust Tip: Yes
• Exhaust Tip Style: 4-1/2 Inch Round Angle-Cut
• Exhaust Tip Material: Stainless Steel
• Muffler Quantity: 2
• Includes Exhaust Pipe Muffler Delete: No
• Muffler Configuration: Single Inlet/ Single Outlet
• Muffler Brand: Corsa
• Includes Hardware: Yes
• Required Welding: No
• Estimated Install Time (Hours): 2

Basic Install Overview

Bolt-on cat-back. A lift helps. Penetrating oil and a torque wrench make it painless.

1. Prep

   • Let the exhaust cool. Disconnect battery if working near valve harnesses.

   • Soak factory clamps/hangers with penetrant. Lay out the CORSA kit in order.

2. Remove Stock Cat-Back

   • Loosen mid-pipe/clamp connection(s).

   • Unhook the system from rubber isolators (support the weight as you go).

   • Carefully drop the OE cat-back in sections.

3. Build the New System

   • Slip-fit the front pipe/X-pipe to the mid-pipe connection—snug clamps (don’t fully torque yet).

   • Hang the mufflers on factory rubber isolators.

   • Install tailpipes and position 4.5" dual-wall tips (slash, straight, or carbon) to taste.

4. Align & Clearance

   • Center tips in the valance, set even depth/angle.

   • Check for driveshaft, brake line, and heat-shield clearance at full droop.

5. Torque & Test

   • Torque band clamps evenly from front to rear to manufacturer spec.

   • Start the car, check for leaks, let it heat-cycle, then re-torque after a short drive.

WARNING: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.”