Wheels SEISMIC Alpha 75.5mm 76A Mango Defcon

The Seismic Alpha 75.5mm 76A Mango Defcon Wheels are built for riders who demand high-speed traction, control, and precision in downhill racing. With their 75.5mm diameter and 62.5mm width, these wheels offer momentum through straightaways while maintaining agility for technical pre-drifts and edge-to-edge transitions. Their 62mm running surface ensures maximum grip and stability through the most intense corners. Made with Seismic’s Defcon™ urethane, these wheels provide Guinness World Record speed, ultra-high rebound, and consistent slow wear. The 76A Mango durometer delivers vice-like grip and a highly snappy, directional slide, making them ideal for aggressive racing, fast pre-drifts, and powerful braking control. Engineered around Seismic’s Fusion™ core, the largest and most supportive hub ever in a wheel of this size, these wheels maximize edge support, mechanical lock with the urethane, and enhanced in-slide feedback. The bearing seat, offset by 6.5%, ensures progressive lip engagement and even wear, while the square outside edge and straight-cut inside edge provide unrivaled traction under extreme G-forces. Specifications : Size : 75.5mm x 62.5mm Color : Mango Durometer : 76A Formula : Defcon™ (Guinness WR speed, ultra-high rebound) Running surface : 62mm Bearing seat : Offset 6.5% (for progressive lip engagement) Profile : Square outside edge, straight-cut inside edge Weight : 8.125 oz per wheel Sold as : Set of four wheels Designed for downhill racers who prioritize grip, speed, and aggressive braking power, the Seismic Alpha 75.5mm 76A Mango Defcon Wheels offer top-tier performance for high-speed cornering, technical pre-drifts, and controlled slides.