The FAST LS3 102mm intake manifold is a polymer intake manifold for GM LS3 engines. The LSXR� 102mm Intake Manifold features a three-piece modular design that allows easy disassembly and porting. Extensive testing led to a runner design that is longer and less restrictive and gives the user the ability to remove individual runners from the manifold for modification. Constructed from the same advanced polymer material as the LSX� 92mm Intake Manifold, the LSXR� offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat dissipating characteristics. While the LSXR� features a 102mm air inlet that is perfectly suited to the FAST� Big Mouth 102mm Throttle Body�, it can also be used with stock or aftermarket LS7 90mm or 92mm throttle bodies. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows the use of factory accessories without modification or clearance concerns.