105mm MAD Wheelz V2 StealthThe MAD 105 Wheelz feature Hollow Pour Technology, a custom urethane pouring process that is designed to form twelve hollow pockets on the inside surface of each wheel. These pockets give extra space for the soft urethane to flex and compress with the contours and bumps in the road, making the ride exceptionally smooth and allowing the wheels to maintain contact even on the roughest of roads. The MAD Wheelz are identical to the original Boosted 105