They have an offset bearing seat, which makes the front side (ie, the graphic printed side) of the wheel deeper than the back side. As such, they should always be set up graphic side out.

To find the overall track width of your truck/Helium setup, add 1" to the truck axle length. We recommend that the wheel/truck combo match the deck width for superior stability and old-school period-correctness. So, for a 10" wide deck? Run Heliums with 9" trucks.

Dimensions:

• 65mm tall x 59mm wide
• 36mm contact patch