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FAST

FAST Throttle Body LSX 102MM W/TPS

MPN: 54103 Catalog #: 001872731 Category: Throttle Bodies Check Vehicle Fitment

Product Details

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.

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.

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

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Engine Compatibility

GM - LSMatched variant: LSX

GM Gen III/IV V8; LS1/LS2/LS3/LS6/LS7/LS9/LSA/LSX

Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.

Product Specs

Brand
FAST
Part Number
54103
Catalog Number
001872731
Product Line
FST Throttle Bodies
Category
Engines & Parts
Type
Throttle Bodies
UPC / Barcode
036584208136
Vendor Product Category
Engine Components
Vendor Product Subcategory
Throttle Bodies
Length
8.80 in
Width
7.00 in
Height
4.80 in
Weight
3.50 lb
Units Per SKU
1
Freight / LTL
No
Air Restricted
No
Prop 65
Y
CARB Approved
No
Clearance Item
No

Shipping & Availability

Current status 42 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

STATE RESTRICTIONS: This item is not CARB approved and can not ship to California.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 42 available as of 6/4/2026.

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