The HARD Motorsport brake cooling duct RACE kit is the only complete package that you need for mounting the plumbing for brake ducts to your E46 race car.  This kit incorporates a powder coated aluminum tube between the inlet and the flex tube where the contact point can be the tire.  This prevents you from instantly wearing a hole in your very expensive to replace flex tube.


The Hard Motorsport kit also uses a powder coated metal bracket that mounts to the frame of your BMW E46 M3 which allows removal of your front bumper while leaving the entire kit in place for fast track repairs. No need to fumble with bolts, screws and duct clamps or unintentionally ripping your flex tubing in the process.


The quality ABS molded duct Inlets are designed to endure the rigors of racing while saving you hundreds of dollars on your build budget!  They're even lighter than expensive carbon fiber or resin alternatives.


At Nuts & Bolts Performance we option this kit to INCLUDE both the driver side and passenger side backing plates.  This will give you a complete brake cooling kit that is ready to be installed!



  • Left and right Molded Inlets for the E46 M3 style bumper - 3" single outlet 
  • 2 - silicone 3" couplers
  • 2 - aluminum cooling tubes and mounting brackets
  • High temp 3" flex hose
  • INCLUDES left and right brake cooling backing plates - choose OE rotor size/up to 354mm or larger BBK rotors with 355mm+
  • Mounting hardware and clamps included


E46 M3 Brake Cooling Kit

Rotor Size
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