Seismic Alpha 75.5mm 76a 77a 78a Wheels

Seismic Alpha 75.5mm 76a 77a 78a Wheels
A giant step forward in race wheel engineering. The Alpha’s stout S-shaped edge profile optimizes lip support, maximizes traction under extreme G’s, and ensures predictable slide initiation and hookup. The running surface features a 0.5mm concave that pre-loads the edges, heightens rebound, and enhances in-slide feedback. The bearing seat is offset 6% for progressive lip engagement and more consistent wear.

The Alpha™ also marks the debut of Seismic’s proprietary Fusion™ core – at 46mm tall x 44mm wide, the largest and most supportive hub ever seen in a wheel this size. Features include a deep “saddle” profile, 8 perpendicular support beams (hollowed-out for lightness and aesthetics), and robust bearing lugs. The Fusion minimizes lateral wheel flex, supercharges edge support, and assures absolute mechanical lock with the urethane. Formed from 85D fiber-reinforced thermoplastic – the toughest hub material in the industry.

• Available in two proprietary formulas
• BlackOps™: ultimate balance of speed and grip
• Extreme traction fresh
• Buttery and smooth broken-in
• Comfortable and predictable
• Defcon™: Guinness WR speed
• Directional slide
• Long-lasting grip
• Slow, consistent wear

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