RR Racing is proud to have the bestselling, best sounding and most versatile Lexus exhaust on the market! We know there are other “valvetronic” exhaust on the market, but having heard those systems, and considering their astronomical $5000+ pricetag, we decided to design and build our own system that sounds better, and is more affordable! Now introducing, the "R2" version of the popular RR Racing Bazooka. We constantly strive for improvements so our latest R2 version of the bazooka has revised mufflers and a more technologically advanced Valvetronic system. These improvements are based on years of positive reviews and customer feedback. This product is a full cat-back system, but it is also available in as an axle back bolt-on as well. In “Bazooka” mode, our RCF Valvetronic Exhaust is race-car loud, bringing out the full sonorous glory of the RCF v8. The sound is absolutely addictive, much like the popular Borla exhaust, only louder. But as amazing as that sound is, we fully realize that there are times where a more civilized exhaust note is required, so we implemented 2 electronic valves that route the exhaust gases through secondary mufflers. With a push of a button on the remote control key fob, your RCF will go from race car loud to quiet mode in just a few seconds. Want the best of both worlds? Our new "R2" Bazooka with revised Valvetronic now offers 2 extra dynamic modes for a more personalized experience. Have the valves open at 3,000 Rpms or open gradually from the closed position. RR Racing Bazooka features high quality stainless steel construction with 2.5” diameter T304 stainless steel piping, X-pipe for better exhaust scavenging and maximum hp gains. Our standard quad tips are 3.5” diameter burnt stainless, and are removable/replaceable in case of damage. Power gains are similar compared to most 2.5” dual cat-less RCF exhausts, or about 25hp measured at the wheels. Additional gains are attainable when pairing this exhaust with PPE headers and our ECU tune, or even our 670hp Supercharger kit!For a more recent RCF dyno testing results, please refer to the following News Article:http://blog.rr-racing.com/news/2022/01/13/dyno-testing-the-latest-mods-on-lexus-rcf/ Please watch the following video comparing our Borla options: The following video compares loud and quiet modes on Lexus RCF ( Same on IS500) Important Disclaimer RR-Racing cannot ensure the applicability of manufacturer's or third-party warranties after performing this modification. Likewise, RR-Racing does not provide any warranty, written or implied, to the engine or drivetrain of your vehicle. RR-Racing does not condone the removal of any emissions related device on vehicles used on public roads. By buying this products, you agree to the terms of this disclaimer.