FX True-Dual LS Swap Exhaust System by Kooks
These exhaust systems are made exclusively for LOJ Conversions by renowned header and exhaust manufacturer Kooks! You simply will not find a finer quality exhaust system anywhere!
LOJ Conversions FX True-Dual LS Swap Exhaust Systems are constructed of 100% USA Sourced T304 Aircraft Quality Stainless Steel, with mandrel bent 2.5” or 3.0" ID Piping.
All of the exhaust systems utilize 3" piping from the headers to the X-Pipe. The piping after the X can be either 3" throughout or 2.5". The 3" front pipes are available with or without catalytic converters.
The 2.5" systems are quieter and less susceptible to drone while cruising on the highway. We recommend the 2.5" systems for the customers looking for a quiet daily driver experience that barks at wide open throttle. At less than 600WHP, the 2.5" system sacrifices nothing over the 3" system.
For those customers looking for more noise, the 3" system is the answer. No one will second guess what is under the hood of your ride with one of these systems installed. The high flow nature of the 3" piping makes them good for over 1000WHP.
In order to maintain symmetry and proper ground clearance, LOJ designed these systems to work with a double-hump rear swaybar as opposed to snaking around the factory single hump swaybar. The 2009-2012 Infiniti FX has a stock double hump rear swaybar that is a direct bolt-in swap into the earlier trucks and is REQUIRED for the installation of this exhaust system. These swaybars can be purchased very inexpesively from used parts sellers online. In some cases, they can be had for as little as $75 shipped. LOJ felt this small investment was worthwhile to achieve a better fitting, no-compromises, true-dual exhaust system. Make sure that whichever swaybar you choose comes with the D-Brackets and Bushings!
NOTE 1: These exhaust systems are specifically designed to work with our LS Swap Headers and engine placement using the LOJ Conversions LS Swap Kit. LOJ can not and will not guarantee fitment with any other headers or swap kits on the market!
NOTE 2: The FX Exhaust System is simply our G35 exhaust system. It fits the FX, but requires longer exhaust tips to make up for the additional length of the rear end of the FX. To this end, we include a pair of longer exhaust tips to facilitate installation. These tips must be WELDED in place. Any local exhaust shop can perform this service. While we understand how this may be an inconvenience, there is not enough market demand to justify the design and production of an FX-Specific axle-back portion of this exhaust, which is why this is the only option we offer.