BMW E9x (S65) M3 Carbon Plenum

S65 Carbon Fiber Plenum

Engineered to maintain fundamental OEM styling while adding internal space to allow for more efficient M3 GT-style velocity stacks, our intake plenum makes no sacrifices for optimal performance, aesthetics, or sound. 

We achieve this by starting with a one-piece design. Although not the easiest design to manufacture, the design minimizes failure points caused by the easier conventional method of bonding two halves together, increases the overall rigidity of the component by ensuring continuous load transfer through carbon fibers with no perceptible break, and decreases overall weight.”

Made from aerospace quality pre-preg carbon fiber baked in our autoclave, then clear-coated and hand-finished with billet aluminum fittings, all in Partee Racing’s Danville, Virginia shop.

Offered initially at the introductory price of only $1850.00 in gloss, and $1950.00 in matte. 

Get the behind the scenes scoop about the design and manufacturing process:

Key Features

• Trumpets crafted from top-grade 6061 T6 Billet Aluminum
• Optional anodizing for personalized aesthetics
• Lexan Glass cover that is heat and impact-resistant
• Made entirely in the USA
• Maintains an OEM+ look while providing superior performance and quality

Solving The Problem

Standard S65 Plenums often fall short of meeting the high standards of BMW enthusiasts. Whether it was lackluster performance, subpar materials, or aesthetic shortcomings, the need for an overhaul was clear. Our E9x Carbon Plenum fills that gap.