AUTOTECKNIC DRY CARBON FRONT BUMPER GRILLE TRIM SET - G20 M340I M-SPORTAutoTecknic Dry Carbon M Sport Front Bumper Trim Side Grille Surround Set in Dry Carbon construction with a high gloss finish for that prestige performance styling to the front end of your G20 M340i. Dry carbon fiber's name comes from its manufacturing process. Dry carbon fiber is formed by using a "pre preg" or impregnated piece of carbon materials. This piece of carbon is first placed into a mold and then into a sealed vacuum (autoclave) to cure