Seismic Urchin Longboard Wheels

Yes. The Urchin wheels come with a stoneground running surface, which removes the slick outer skin of the urethane so you can initiate slides immediately without a break-in period.

The offset bearing seat positions the wheel slightly inward relative to the core. This design balances grip and slide, providing more stability during aggressive cornering while keeping the wheel predictable when you break traction.

These are designed primarily for high-speed freeriding and technical cornering. With a 75mm diameter and 80A durometer, they offer the right balance of roll speed and control for riders who want to carve hard and slide with precision.

Absolutely. The radiused outside edge and beveled inside edge are specifically shaped to smooth out the transition between gripping the pavement and breaking into a slide, making your maneuvers feel more fluid and less catchy.

An 80A durometer is on the softer side of the spectrum for longboard wheels. This provides excellent grip and vibration dampening on rougher pavement, while still being firm enough to release into a slide when you push them hard.