XD Wheels Xd135 Grenade OR Series Wheel features a slightly convexed face with a multi-spoke/window design and simulated bead lock hardware accents around the circumference of the lip for rugged good looks. A branded XD center cap is included. This Xd135 Grenade OR Series Wheel is perfectly suited for street and off-road applications. This XD Wheel is completed in a high quality matte bronze finish with a matte black lip/barrel for an impressive contrast in appearance that everyone will envy. For added protection and good looks, this Wheel features a durable clear coat that is tough enough to stand up against the hazards of everyday driving - including road chips and pitting. One-Piece Cast Wheel. XD's One-Piece aluminum Wheels are manufactured using gravity casting. Gravity casting is the process of pouring molten aluminum into a wheel mold or form and utilizing the earth's own gravity to help fill the mold. The result is a strong, durable wheel that has the same good looks as a more expensive wheel, at a fraction of the price. Application. Sold individually.