Seismic M40523

70mm tall x 44mm wide Urchin wheels with a 38mm running surface feature an offset bearing seat, radiused outside edge, and beveled inside edge. Each wheel weighs 5.0 oz and is sold in sets of four.

Available in three proprietary formulas, with finely-tuned durometer choices:

• Defcon: Guinness WR speed for faster acceleration, easy predictable in-slide feedback, and extremely slow, consistent wear.
• 78A Mango (stoneground): Offers a super fast roll, smooth predictable in-slide feedback, with defined yet easy release.
• Premium Clear: The finest clear urethane available, with 80A Crystal Clear Blue providing smooth rolling and fast grip when fresh, and sugary smooth sliding when broken-in.
• Elixir: Ensures smooth, predictable slides even on concrete, with easy release and hookup, supreme control, and bright 'thane lines.
• 82A Red (stoneground): Ultra smooth and buttery, also featuring bright 'thane lines.

The 70mm by 44mm Urchin wheels are extremely versatile, providing enough grip to hold lines at speed while allowing for easy breakout for larger slides. With a bigger bevel on the inside edge, stoneground running surfaces, and expanded formula options, these wheels are better than ever for hucking standups into corners and slashing down a hill, across town, or through an alley.

Key features include:

• Height and width perfectly balanced for modern all-around riding
• Smooth, easy, comfortable, and predictable slide release
• Amazing in-slide feedback and control, maintaining just the right amount of speed
• Secure, comfortable hookup with vibrant 'thane lanes
• Consistent wear

Molded around an advanced Mini-EC hub, these wheels preserve ample tire thickness while saving over ½-ounce per wheel, stiffening the inside edge, and enhancing inside edge rebound. This results in better roll speed, more predictable handling, and improved slide control.