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Select between open trumpets or carbon fibre plenum
A set of used genuine GM 243 / 799 LS Cathedral Port Heads
Why start your engine build with a worn-out production block from decades ago that needs hours of machine work
250 EXC TPI Six Days 2021
FAST 102mm Intake Manifold LS1/LS2/LS6 (Cathedral Port) keihin Select between open trumpets orFAST engineers teamed up with airflow specialists at RHS to develop polymer intake manifolds for GM LS based engines. Testing on a near stock LS7 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 new modular design that allows fast and easy disassembly and features the ability to remove individual runners for porting.