HGK Racing - F22 Door Inner Panels [Carbon Fiber]BMW F22 carbon fiber door inner panels. Made in The Vacuum Infusion Process (VIP) is a technique that uses vacuum pressure to drive resin into a laminate. Dry materials are laid into the mold and the vacuum is applied before resin is introduced. Once a complete vacuum is achieved, resin is literally sucked into the laminate via carefully placed tubing. Ideal solution for nice interior finish long term service cost effectiveness. Estimate weight Carbon