Holley owns an extensive portfolio of iconic automotive aftermarket brands encompassing fuel systems, exhaust components, and ignition technology. Notable subsidiary brands under its corporate umbrella include MSD Performance, Flowmaster, Hurst, Nitrous Oxide Systems (NOS), Sniper EFI, Hooker Headers, Weiand, and Earl's Performance Plumbing. This diverse brand ecosystem allows the enterprise to capture market share across vintage restoration, modern muscle, and professional racing segments.