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.
Benefit from a 15% discount from an order value of CHF 200*. Simply enter the voucher code «Christmas» during the order process.
Important: Order your gifts before December 2, 2025 to get them right on time! From December 2 to January 7, 2026 wheelson.ch will be at the WDSC race in El Salvador. Orders placed during this time can be processed and shipped from January 8, 2026.
* Valid until January 7, 2026. Voucher cannot be used in combination with other vouchers and excludes products on sale.