TRex Grilles Now 25% Off and Free Shipping. T-Rex Grilles has more than fifteen years been a world leader in the design and production of aftermarket grilles. T Rex Grill has a commitment to provide quality and outstanding grilles that satisfy a customer’s needs. There are different styles of T-Rex Billet Grilles available like the Traditional Billet Grilles, Luxurious Upper Class Grilles, Motorsports Inspired Sport Series Grilles and the Aggressive X-Metal Grille. T-Rex makes sure that there is a grille for every customer’s style.