RR Racing already stocks complete Borla exhaust systems for Lexus IS-F. These systems have a nice refined deep sound without drone. They use the stock IS-F exhaust tips. We are introducing the following Borla upgrades:

• RR Racing Quad Tip Upgrade for Borla — dual Magnaflow wide open mufflers with quad 3.5” exhaust tips, slightly louder and deeper than standard Borla.
• RR Racing Quad Tip Bazooka Upgrade for Borla — retains large Borla resonator and replaces mufflers with dual muffler-less quad tips, loud system above 2500rpm, but tolerable below, with very aggressive and intoxicating exotic sound).