Performance Design Carbon HR Intake Manifold Lid

The Carbon HR Intake Manifold Lid offers owners of the Holley Hi-Ram intake, a lightweight carbon fiber plenum upper to reduce weight, reduce heat soak and add a unique engine aesthetic with exposed weave cloth. Constructed from high strength carbon fiber with high temp epoxy, bonded with high temp aerospace structural adhesive this part saves approximately 3 lbs of mass vs. the cast original lid.

With a matching plenum bolt pattern, this carbon plenum upper will bolt to any existing Holley Hi-Ram, Mid-Ram or Lo-Ram cast lowers (excluding Coyote). The throttle is move up and rearward to improve the flow transition into the plenum and facilitate the carbon process.

All billet components machined in Southeast Michigan are combined with carbon molding and hand assembly in Auburn Hills, Michigan. Available to install on any Holley Hi-Ram, or Mid-Ram intake manifold.

• Lightweight carbon fiber lid replaces cast aluminum to reduce mass by approximately 3 lbs
• Constructed with high-temp epoxy and aerospace structural adhesive for strength and durability
• Features a billet 102–105mm throttle body flange with improved rearward positioning for optimized airflow
• Designed, machined, and hand-assembled in Michigan, ensuring quality and craftsmanship

Compatible with Holley Hi-Ram, Mid-Ram, and Lo-Ram intake manifolds (Coyote excluded)

• Carbon fiber plenum upper using high temperature epoxy matrix
• Billet 102-105mm throttle body flange
• Carbon fiber-wrapped foam core plenum flange
• Fully bonded with high temp aerospace structural adhesive
• Plenum can be reversed on the Hi-Ram lower