Wheels SEISMIC Alpha 80.5mm 78A Mint Defcon

The Seismic Alpha 80.5mm 78A Mint Defcon Wheels are engineered for downhill skaters seeking a balance of high-speed grip, smooth slides, and responsive handling. Their 80.5mm diameter and 60mm width deliver excellent roll speed and stability, while the 60.5mm running surface ensures consistent traction and predictable slide performance. Made with Seismic’s Defcon™ ultra-high-rebound urethane, these wheels offer Guinness World Record speed, precise grip, and slow, even wear. The 78A Mint durometer provides stiff edges for increased grip while maintaining a controllable, crisp slide initiation, making them ideal for smooth roads and lighter riders. Designed around Seismic’s Fusion™ core, the largest and most energy-efficient hub ever used in a wheel of this size, these wheels optimize energy return, improve acceleration, and enhance edge support. The bearing seat, offset by 3.5%, allows for progressive lip engagement and consistent wear, while the square outside edge and straight-cut inside edge maximize traction and precise slide control. Specifications : Size : 80.5mm x 60mm Color : Mint Durometer : 78A Formula : Defcon™ (Guinness WR speed, ultra-high rebound) Running surface : 60.5mm Bearing seat : Offset 3.5% (for progressive lip engagement) Profile : Square outside edge, straight-cut inside edge Core : Fusion™ (46mm x 44mm fiber-reinforced thermoplastic) Weight : 9.125 oz per wheel Sold as : Set of four wheels Designed for racers who want a perfect balance of grip, speed, and smooth slide initiation, the Seismic Alpha 80.5mm 78A Mint Defcon Wheels provide high-performance control for downhill racing and technical freeride.