Air and Fuel› Intake Manifolds and Components

FAST

FAST Throttle Body LSX 102MM W/TPS

$356.95

SKU: F003 54103

In Stock
In Stock
Ships by Sep 19
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The FAST 54103 is a Big Mouth LT throttle body designed for improved airflow. It features an enlarged bore to support higher horsepower and a progressive throttle pulley for enhanced drivability, especially at low throttle. A double return spring provides a solid feel and increased safety.
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Part #: 54103

These throttle bodies offer increased throttle blade thickness to eliminate deflection commonly found with other throttle bodies, especially those in boosted applications. A smoother operating offset blade pivot improves throttle response, and a beefed up linkage and dual throttle spring mechanism ensure total throttle control. Constructed from billet aluminum, the FAST Big Mouth 102mm Throttle Body with TPS and IACis designed to maximize performance upgrades on all Gen III and Gen IV engines with cable driven throttle bodies.

Features:

  • The Fast Big Mouth 102mm throttle body provides increased airflow through a smoother offset blade pivotIn addition we increased blade thickness to eliminate deflection and a beefed up linkage and spring mechanism

The Fast Big Mouth 102mm throttle body provides increased airflow through a smoother offset blade pivot. In addition we increased blade thickness to eliminate deflection and a beefed up linkage and spring mechanism.

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

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFAST
Part NumberF003 54103
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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