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FST146302 - FAST LSXR? 102mm Car Intake Manifold (LS1, LS2 & LS6)

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.



Fits LS Cathedral port cylinder head equipped applications (LS1/LS2/LS6)
50 State Legal Intake - C.A.R.B - E.O. D-279-8

FAST™ engineers teamed up with the airflow specialists at RHS® to develop the LSXR™ Intake Manifolds for cathedral port LS1/LS2/ LS6 engines and rectangular port GM LS3 and LS7 engines. The LSXRT™ Intake Manifold was developed for the GM 4.8/5.3/6.0L cathedral port truck engines and cathedral port LS1/LS2/LS6 race applications where hood clearance is not a concern.

  • Constructed from an advanced polymer material that offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat dissipating characteristics.
  • 102mm air inlet that is perfectly suited to the FAST™ Big Mouth 102mm Throttle Body™, but the manifolds can also be used with any OEM or aftermarket 4-bolt 90mm or 92mm throttle bodies.
  • Innovative multi-layer design with removable runners for quick and easy disassembly and porting, 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.
  • When used with a Big Mouth 102mm Throttle Body™, the LSXR™ Intake Manifold produced gains of 16+ Horsepower on a near stock LS7 engine and 26+ Rear Wheel Horsepower on a 500cid RHS® LS Aluminum Block based engine.

    Fuel Rail Options for LS2 Engines
    FAST™ Billet Fuel Rail Kit (LS2)
    Stock GM LS2 OEM fuel rails will bolt right on

    Fuel Rail Options for LS1/LS6 Engines
    FAST™ Billet Fuel Rail Kit (LS1/LS6)
    FAST™ OEM LS2-Style Fuel Rail Kit

    Drive-By Cable Throttle Body Options
    Big Mouth 102mm Throttle Body™
    Big Mouth 92mm Throttle Body™

    Note: Drive-by-wire engines can re-use the OEM GM 90mm 4-bolt throttle body

  • Application List



    • 146302
    • 146302
    • 036584205173
    • Fast
    • New


    Shipping Information

    • Item Requires Shipping
    • 19.4 lbs.
    • W15.0000” x H7.0000” x L24.0000”

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