Fast Lsxr 102mm Race-Runner Intake Manifold Big Mouth Chevy Ls3 - Rectangular Port

FAST® engineers teamed up with airflow specialists at RHS® to develop polymer intake manifolds for GM LS based engines. Testing on a near stock LS3 engine with a Big Mouth 102mm Throttle Body™ produced gains of 16+ horsepower, and 26+ rear wheel horsepower on a 500c.i. engine. The LSXR™ 102mm Intake Manifold features a revolutionary modular design that allows fast and easy disassembly and features the ability to remove individual runners for porting. Constructed from the same advanced polymer material as the original FAST® 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™. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows the use of factory accessories without modification or clearance concerns. Notes: This is a 3-piece unit designed for the Big Mouth 102mm throttle body or a stock throttle body with adapter. Gaskets not included. *This intake manifold is 50 State Legal CARB EO# D-279-9
Now available for LS3, L76, L92 and L99 rectangle port applications is a Race version of the LSXR™ Intake Manifold. With shorter and straighter runners than the original LSXR™, the Race intakes have proven to make up to 35+ more horsepower. Runner sets can also be purchased separately. Features: 
Black version of original LSXR intake w/ 102mm opening & added refinements
Includes stainless steel bolts, threaded insert throttle body mounts & mounting hardware
Incorporates high-quality polymer materials, which resist “heat sink” effect of aluminum
Maximizes potential of other popular engine performance upgrades such as cylinder heads
Improved throttle body sealing flange & o-ring gasket
50 state legal under C.A.R.B. E.O. #D-279-9 Specs:
Cylinder Head Configuration: LS3/L76/L92/L99 (Rectangular Port)
Fuel Injection Style: Multi-port
Basic Operating RPM Range: 1,800-6,000
Throttle Body Bore Size: 102mm