Ferrari 550 Twin Sound Exhaust System. Designed specially to maximize exhaust flow, the CAPRISTO Valved Exhaust system for the Ferrari 550 free up pent-up energy, which significantly increases the amount of horsepower released by the engine. With a CAPRISTO Exhaust system, your Ferrari engine note will announce the car long before it makes an appearance from around the corner. Manufactured from the premium materials and T309 grade stainless steel, the CAPRISTO Exhaust for the Ferrari 550 is ready to complete the image of your vehicle and give you instant sound and performance gains. What the CAPRISTO custom exhaust systems does is enhance this sound, while trimming out the noise and eliminating the scream-like tones to give a streamlined, powerful growl that is within street auto sound limits.