What makes this throttle body better for boosted applications?

The FAST Big Mouth throttle body features a thicker throttle blade designed to eliminate deflection, which is a common issue when higher boost pressures are applied. The beefed-up linkage and dual spring mechanism also contribute to better control under demanding conditions.

Does this throttle body come with all the necessary sensors?

Yes, this throttle body includes the Throttle Position Sensor (TPS). It also has provisions for the Idle Air Control (IAC) sensor, though you may need to transfer your existing IAC if it's not included separately.

Can this throttle body be used on any LS engine?

This throttle body is specifically designed for Gen III and Gen IV GM LS engines that use a cable-driven throttle system. It is not compatible with electronic throttle control (ETC) systems.

FAST LSX 102mm Throttle Body w/ TPS 54103

Name: FAST Throttle Body LSX 102MM W/TPS
Brand: FAST
SKU: fast-fast-throttle-body-lsx-102mm-w-tps-t14-4388519
Price: 381.77 USD
Availability: InStock

FAST Throttle Body LSX 102MM W/TPS

$381.77

Only 7 left in stock

FAST is known for performance intake manifolds. This 102mm billet aluminum throttle body for GM LS engines improves airflow and throttle response.

Key Features

Fits Gen III and Gen IV GM LS engines with cable-driven throttle bodies.
102mm throttle bore increases airflow potential.
Thicker throttle blade construction eliminates deflection, especially in boosted applications.
Smoother offset blade pivot improves throttle response.
Beefed-up linkage and dual throttle spring mechanism ensure precise throttle control.
Constructed from billet aluminum for strength and light weight.

This throttle body is designed for Gen III and Gen IV GM LS engines that utilize a cable-driven throttle body. It is not CARB approved and cannot be shipped to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

FAST is a brand known for its performance intake manifolds, and this Big Mouth 102mm throttle body continues that focus on improving airflow for GM LS engines. If you're looking to get more air into your Gen III or Gen IV engine, especially if you've got a cable-driven throttle setup, this is a solid option. It's built to handle upgrades, including boosted applications, by addressing common weak points found in other throttle bodies.

What sets this one apart is the attention to detail in its construction. The throttle blade itself is thicker to prevent deflection, which is crucial when you're pushing more air, particularly with forced induction. You'll also notice a smoother operating offset blade pivot, which helps improve throttle response. Plus, the linkage and dual throttle spring mechanism have been beefed up to ensure you have total control over your throttle, no matter how hard you're driving.

This throttle body is constructed from billet aluminum, making it strong and lightweight. It's designed as a direct replacement for cable-driven throttle bodies on Gen III and Gen IV GM LS engines, aiming to maximize the performance gains from your other engine upgrades. Keep in mind that this part is not CARB approved and cannot be shipped to California.