Replace the heavy and bulky boat anchor rear cat-back exhaust and get ripping F1 car sound out of your Lamborghini Aventador without losing the civility of the factory valved exhaust system with our Valvetronic Exhaust System. Featuring Helical Valves and signature design improves exhaust scavenging and gives the Lamborghini V12 a high-pitched F1 wail. SOUND: At part throttle, the valves stay closed and keep the V12 tame and easy to live with. With your foot to the floor the valves open to unleash the full cacophony of the Lamborghini V12, allowing the pulses of each bank to converge into that iconic F1 high-pitched wail.. FEATURES: Fits all Lamborghini Aventador S LP-740 V12 vehicles (2016-2021) Street & dyno developed and autobahn endurance tested Laser scanned and CAD designed for perfect OEM fitment using AMETEK HANDY SCAN 700 Significant weight savings of over 20+ lbs versus the factory exhaust Constructed from high quality 14-16ga CNC mandrel-bent T304 stainless steel for maximum performance and durability Utilizes factory exhaust outlet tip; Fabspeed's tips sit right inside of the factory outlet for an aggressive look Helical U.K. vacuum-actuated exhaust valves are aerospace quality, have superior heat resistance, and are used exclusively by tier 1 OEMs like Ferrari, Porsche, Lamborghini, McLaren, Aston Martin, and hypercar manufacturers. No cheap 100% guaranteed to fail Chinese valves. No CEL (Check Engine Light) Guaranteed Retains factory exhaust valve functionality - Plug and play with the factory Lamborghini system Complies with OEM Lamborghini catback warranty Worlds best sounding exhaust system Simple bolt-on installation, no cutting or welding required All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty