Sierra book fits 2018 and below. The original Yukon Denali exhaust is priced at 1500, excluding the Y-pipe and pipes. The invoice is available. The silencer is 100% functional. It's a custom-made exhaust that replaces the two outlets with clamps. The Corsa Y-pipe provides a balanced sound, not too loud and not too quiet. The exhaust has only been used for 6 months without any backfiring. Selling at a reasonable price. Please do not undervalue the item. The exhaust system was meticulously crafted to achieve a pleasant and balanced sound, with the silencer providing effective muffling 🔴 A video demonstrating the sound is available 🔴 Location: Bishe.