Android
In Chrome, open the browser menu and choose Add to Home screen or Install app.
Preview shows the dual 95mm LT5 throttle-body configuration. Single- and dual-throttle-body lids are built to order; confirm your configuration before ordering.
Custom Aluminum Metal-Printed Holley High Ram Plenum Lids
Single or Dual Throttle Body • Custom TB Angles • Custom Logos • Ultra Low / Mid / Tall Options
Bring your Holley High Ram to the next level with a fully custom, 100% aluminum metal-printed plenum lid engineered for strength, airflow, and unlimited personalization. These aren’t plastic lids — these are full-metal, motorsport-grade components built for serious power.
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Key Features
100% Aluminum Metal Printing
Full DMLS (Direct Metal Laser Sintered) construction
High-temperature, high-boost safe
Extremely rigid and lightweight
Zero warping, zero swelling, zero compromises
This is the closest you can get to billet… without the billet price.
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Single or Dual Throttle Body Options
Compatible with all major throttle body patterns:
80mm / 90mm Coyote
GT350 87mm / 90mm
CobraJet Monoblade
GM 90 / 102 / 103 / 105mm
Nick Williams 112mm
…and more.
Custom throttle-body angle options available for hood clearance, charge-pipe routing, or special turbo/supercharger layouts.
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Optional Burst Panel Port
For extreme boost setups needing additional protection.
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Custom Logos & Styling
Perfect for shops, race teams, or one-off personal builds:
Engraved custom logos
Signature patterns
Text or branding
(Wholesale accounts receive custom logo work at no extra charge.)
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Height Options
Choose the plenum profile that fits your build:
Ultra Low – Max hood clearance
Mid Height – Ideal balance of power and space
Tall – Maximum plenum volume + top-end horsepower
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Why G1Pro Plenum Lids?
True motorsport-grade aluminum construction
Better airflow distribution
Boost-safe structure with internal ribbing
OEM-grade sealing surfaces
Built-to-order for your setup
Designed, tested, and optimized in-house
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Lead Time
14–18 days depending on customization level.
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Upgrade your High Ram with a lid engineered specifically around your build, your throttle body, and your airflow goals.
Add to Cart or DM for custom builds.