E46 M3-MX Carbon Fiber Rear Bumper ExtensionsE46 M3 MX Carbon Fiber Rear Bumper Extensions Enhance the rear styling of your BMW E46 M3 with the MX Carbon Fiber Rear Bumper Extensions. Designed to add a more aggressive and refined appearance, these extensions perfectly complement the factory bumper lines while delivering a motorsport inspired aesthetic. Crafted from high quality carbon fiber and finished with a premium glossy clear coat, these bumper extensions provide lightweight durability,