***See All Available Sunroof Caps/Diffuser*** Put your car on a diet today and install one of our race proven sunroof plug kit (SPK's) today. We didn't invent the sunroof plug, we just perfected it. There is no other single body part you can replace that will give you the same weight reduction benefit as an SPK! Our kit shaves lots of weight UP HIGH! If you care about any of the following bullet items you need one of our kits! Benefits: Â· Reduce Vehicle Weight Â· Lowers Vehicle Center of Gravity Â· Reduce Weight Transfer Â· Lower 60 ft and/or Lap Times Our kits include: Â· Vacuum infused carbon fiber panel Â· Steel or aluminum mounting brackets depending on model Â· Black, countersunk, stainless steel mounting screws Â· Black, countersunk, stainless steel nylock nuts Â· Bracket locating tool (to ensure flush mounting panel) Â· Special Aluminum drive rivets where applicable Â· Black silicone to seal the panel (special technique included) Â· Comprehensive Instructions and bracket locating diagram ----------------------------------------------------------------- Whether you drive your car to and from work or only drive a quarter mile at a time you will see remarkable benefits with our new diffuser design. At speed a rear bumper cover can increase overall aero drag and promote lift. Neither of these effects are desirable on any vehicle, and as speed increases the problem becomes more pronounced. Think of your rear bumper as a big air brake. Our diffuser removes the trapped air and lets it flow freely through the bumper cover. Our product promotes higher track speed and gives the driver more stability at those high speeds. This product has been tested at the drag strip on a 9 second, 150mph drag Civic. Each diffuser is CNC water jet cut, and features a glossy finish. It measures approximately 4"x45", and comes with easy to read instructions for trouble free install and black painted rivets. For those really fast racers out there you will be happy to know we machined a center hole just for your parachute tube. A secondary benefit for some cars using parachutes is faster parachute deployment due to the larger volume of air exiting out the bumper cover. Shipping is always included in the price you see inside the 48 lower United States.