Pure grip at its finest, with superior wear characteristics. Seismic is the wheel of choice for the world's most discerning racers – including the 2006 World Slalom Champion and the 2007 IGSA World #1-ranked downhill racer – along with countless longboarders, cruisers, and classic rippers!
All Seismic wheels 77A and above are now poured in a revolutionary new urethane compound, code named "Black Ops". The best, bar none. It offers more grip and rebound together, with less rolling resistance, than any other formula ever! Industry-leading core technology makes our big wheels surprisingly lightweight, with supercharged inside edge rebound.
For highest performance, use a softer duro at the tail (where thrust is generated and grip is most critical) and a harder duro at the nose (to optimize roll speed).