Ultima Solid Billet Polished Aluminum Front Wheel, 16'' x 3.5'', Dual Disc, 37-555Ultima Solid Billet Polished Aluminum Front Wheel, 16" x 3. 5", Dual Disc, 37 555 for the smooth and clean look, you can't go wrong with the Ultima's polished aluminum solid billet wheel. these wheels offer unmatched durability and a stunning polished finish all round that will most definitely make your ride shine and stand out. whether you're looking for front or rear wheels, we provide a variety of options to ensure the perfect fit for your