FAST

FAST LSXRT Manifold 102MM LS Truck Intake Manifold Kit

$1,471.42

SKU: F003 146602B-KIT

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Special Order
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Non-Returnable Item

Description

Part #: 146602B-KIT

Designed specifically for GM 4.8/5.3/6.0L cathedral port truck engines and cathedral port LS1, -2, -6 race applications where hood clearance is not a concern, the FAST LSXRT102mm 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 similar to the LSXR 102mm Intake Manifold for cars, the LSXRT features the ability to remove individual runners 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 stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST 92mm or 102mm throttle body.

Features:

  • The LSXrt Intake + Big Mouth 102mm Throttle Body Kit increases horsepower and throttle response thanks to improved manifold flow and a 102mm throttle body boreBillet throttle blade decreases deflection, polymer manifold reduces heatsoak.

The LSXrt Intake + Big Mouth 102mm Throttle Body Kit increases horsepower and throttle response thanks to improved manifold flow and a 102mm throttle body bore. Billet throttle blade decreases deflection, polymer manifold reduces heatsoak.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Fitment

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Specifications

BrandFAST
Part NumberF003 146602B-KIT

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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