Seismic Urchin Wheel

The Urchin is designed as a versatile hybrid. With a 70mm diameter and 80A durometer, they are soft enough for comfortable cruising and carving, but the radiused edges and predictable slide release make them capable of handling steep hills and freeride sessions.

The offset bearing seat places the core slightly toward the inside of the wheel. This design balances grip and slide, offering a more stable feel than a center-set wheel while still allowing for a smooth, controlled release when you initiate a slide.

Yes, they feature a stoneground surface, meaning they are pre-broken in. You won't need to scrub off a slick outer layer to get a consistent slide; they will feel predictable from your very first run.

The Mini-EC hub is engineered to reduce the overall weight of the wheel while maximizing urethane volume. This results in higher rebound and improved roll speed, helping you maintain momentum through corners and over rougher pavement.

The combination of the radiused outside edge and beveled inside edge is specifically designed to provide a secure hookup. You get a reliable grip when you need to carve hard, but the wheel releases predictably once you push it into a slide.