Lighter, louder, LoudMouth LM-1 exhaust kits for the 2015 Mustang

SLP now offers an aggressive LoudMouth exhaust for the 2015 Ford Mustang. The LoudMouth LM-1 Axle-Back Exhaust Systems are built for all three engine options: Mustangs with the EcoBoost I-4 or V-6 and V8 Mustang GT’s.


Each system allows for maximum flow via straight 2.5-inch tubing, and weighs less than the OEM exhaust. The system is made entirely of 304 stainless steel and it features dual custom-tailored tips, and comes with pre-welded hangers. You only need about 30 minutes to install the complete system, and no cutting is required. These exhaust systems are 50-state emission legal and are covered by SLP’s Performance Guarantee and a lifetime limited warranty.


As a “straight pipe” axle-back system, the LM-1 kit decreases turns and uses mandrel bends to significantly reduce restriction over the 2015 Mustang’s stock mufflers. The result is a higher performing system with a much louder, more aggressive exhaust note. Installing the kit also removes a significant 29 lbs of weight from the rear of the car.

In your kit, you will receive one each of a left and right side pipe assembly with welded hanger, two 304SS tips, and four stainless steel clamps. The kit weighs 19 pounds and measures 29 inches in length, 13 inches in width, and 10 inches in height.

Stay tuned for a video clip showcasing the 2015 Mustang’s SLP rumble.

Check out our LM-1 Kits and give your Mustang a LoudMouth

2015 Mustang GT LM-1 Kit – 620054

2015 Mustang V6 or EcoBoost I-4 LM-1 Kit - 620061

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