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HPI Underhead (HPI 1444 | HPI1444)
HPI Underhead

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Model: HPI 1444
Dist. #: HPI1444   SKU: HPI1444

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List Price:  $20.99
Price:  $18.89
You Save:  $2.1 (10%)

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Updated on Sep 27, 2025 10:40:25 AM

Underhead S-25...
This is the Underhead for the HPI Nitro Star S-25 Engine.
This mounts below the cylinder head and the radiance plug mounts to it.
This can likewise be called a Head Button.

FEATURES:
Aluminum Construction
Silver in Color
CNC Machined
Drilled For Cylinder Head Screws

INCLUDES:
One S-25 Underhead

NEEDS:
Assembly onto Vehicle.

SPECS:
Size: 1.3" (33mm)
Thickness: .10" (2mm)
Thickness at Glow Plug Hole: .28" (7mm)
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