Pro Comps Rock Crawler Xtreme Series 51 Black Steel wheels come in sizes and back spacing that fit your needs. The Rock Crawler Xtreme Wheels use the finest materials along with a durable flat black powder coating and state-of-the-art production equipment to produce a superior steel wheel. NOTE: Center cap and lug nuts sold separately.Your rims do more than just hold your tires and attach to your vehicle. They must be sturdy and dependable to take a beating when you're on the trails. Even if you're not always rock crawling or hill climbing, your wheels must be tough enough to handle unseen obtacles: tree roots, rocks, debris and more. There's no doubt that the Pro Comp 51 Series wheels make the grade - they earn consistently high marks from our riders for their performance and durability. And 4 Wheel Parts is your source for 51 Series wheels and the best deals on all your off-roading gear. Your Destination for Pro Comp Rock Crawler Wheels Sure, having Rock Crawler" in the name doesn't automatically make it a rock crawling tire. But Pro Comp 51 Series wheels are crafted from super-strong steel and using the company's innovative production techniques. Not only are Rock Crawler steel wheels ready for your roughest ride, but they also look great. Their durable flat black powder coating compliments any off-road vehicle, lending a touch of classic style. Many retailers offer Pro Comp 51 Series wheels, but 4 Wheel Parts offers the best savings. Our everyday low prices make it affordable to gear up for any adventure. Order online and choose our convenient shipping or Curbside Store Pickup options.