FAST 146602B LSXRT™ 102mm Truck Intake Manifold Cathedral Port

 FAST 146602B LSXRT™ 102mm Truck Intake Manifold Cathedral Port

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  • Designed for 1997 and later GM 4.8/5.3/6.0L cathedral port truck engines and all LS1, -2, -6 based engines (race applications with appropriate cowl clearance)
  • Multi-layer modular design with removable runners for easy disassembly & porting
  • 102mm inlet works w/ 90, 92 or 102mm throttle bodies for high flow & minimal restriction
  • Advanced polymer material is strong, lightweight & cools intake charge for enhanced power
  • Big gains in rear-wheel hp yet retains factory fitments & under-hood clearance requirements

Injection Molded Polymer Intake
Cathedral-Port Head Equipped Applications

Designed specifically for GM 4.8/5.3/6.0L cathedral port cylinder head-equipped truck engines and cathedral port LS1, -2, -6 applications where hood clearance is not a concern, the FAST™ LSXRT™102mm Intake Manifold follows the path chartered by the original FAST ™ LSX™ Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body™. 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.

The LSXRT™ is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST™ Big Mouth 102mm Throttle Body™, it can also be used with OEM electronic 78/90mm or aftermarket 90/92mm throttle bodies (three-bolt electronic throttle bodies require an adapter). Other features include integrated nitrous bungs and a precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues.

  • 25 HP gain when used w/ 102mm Big Mouth Throttle Body™ on a stock 6.0L truck engine

  • Constructed from proprietary precision injection molded polymer;  Lighter than aluminum w/ lower heat soak propensity & greater strength over stock molded intake

  • Innovative multi-layer design w/ removable runners for quick & easy disassembly & porting

  • Integrated nitrous bungs; plug-and-play w/ ZEX™ LSX™ Direct Port Nitrous System

  • Patented Design - U.S. Patent No 8,567,366


FAST 146602B LSXRT™ 102mm Truck Intake Manifold Cathedral Port
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  • Item #: FAST 146602B LSXRT
  • Manufacturer: FAST
  • Condition: New
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Price $1,020.95
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