Peace be upon you. I am offering for sale a "rockets" catback and y-pipe for a GMC Sierra 2018. The catback and y-pipe are custom-made, not from a specific company. The catback is electronic but does not come with its device. I don't know if there's a leak or anything else, as I'm not experienced with it. I bought it with this catback. Whoever wants a sound clip, send me a WhatsApp message. Please refrain from calling. I will not disappoint serious buyers. Location: North Riyadh, Al-Sahafah. (The sound is good, considered normal, not annoying, and it quiets down when the car warms up). The sale will be easy, God willing. (Price: 700).