Air and Fuel› Intake Manifolds and Components

FAST

FAST 102mm Big Mouth Elect. Throttle Bod

$738.04

SKU: F003 54104

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The FAST 54104 is a 102mm electronic throttle body designed for drive-by-wire GM LS Engines. It increases airflow over stock, maintains idle characteristics, and is plug-and-play for most stock Gen IV LS ECUs (L76, L77, L99, LS3, LS7). It features a high-performance, high-torque motor, robust throttle blade, dual return springs, and a precision non-contact TPS. Satin black anodized finish.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFAST
Part NumberF003 54104

Videos

UnBoxing The Big Mouth And Big Mouth LT Throttle Bodies From FAST

UnBoxing The Big Mouth And Big Mouth LT Throttle Bodies From FAST
LS THROTTLE BODY TEST-92 VS 102 (IS BIGGER REALLY BETTER?)

LS THROTTLE BODY TEST-92 VS 102 (IS BIGGER REALLY BETTER?)
FAST Big Mouth Throttle Body Product Spotlight

FAST Big Mouth Throttle Body Product Spotlight
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LS S10 102mm Throttle Body install!
Fast 102 Intake Install!

Fast 102 Intake Install!
Nick Williams 102mm Throttle Body (Camaro, Corvette, Truck, LSx) Review

Nick Williams 102mm Throttle Body (Camaro, Corvette, Truck, LSx) Review
FAST Intake and Throttle Body Install on FSC Magazine LS1der FBody Camaro

FAST Intake and Throttle Body Install on FSC Magazine LS1der FBody Camaro
Speed Secrets: Does a Larger Throttle Body REALLY Gain Horsepower?

Speed Secrets: Does a Larger Throttle Body REALLY Gain Horsepower?

Buy with Confidence

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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