The Spidertrax 69 was designed to use Wilwood four-piston forged Dynalite racing calipers with two-piece drilled rotors and aluminum hats. They are light, powerful, look really cool, and unlike many 1-ton brake setups, will cleanly fit inside a 15-inch wheel. The outer knuckles utilize a stock Dodge unit bearing, which runs 33-spline stub shafts. The entire wheel-bearing assembly is only $150 per side and can be found at your local parts store or ordered directly from Spidertrax. The unit bearing shaves weight and is less expensive than a conventional hub/spindle. Spidertrax is also offering knuckles compatible with Ford Superduty outers for those who want to run locking hubs.