With a custom unique design, Xtreme Machine Challenger Wheels are available in 17 inch. 18 inch, and 21 inch options. Featuring five racing blades with ball-milled accents, Xtreme Machine Challenger Wheels are competitively priced and easy to install. They feature CNC machine-cut cross patterns that cross in and out of the straight spoke, giving a cool look to your Harley Davidson. Designed with pure passion for the bold, adventurous driver, the black Challenger wheels add tasteful class like no other wheels in the market.