The Piper Xtreme Pro Inline Speed Racing Wheels for track and outdoor marathon skating. Go-Thane Urethane is used with Duo-Tech Technology (dual durometer) over a Helix Core.

Duo-Tech dual durometer technology incorporates a softer poured inner band that optimizes wheel rebound and performance, with a harder exterior for speed and durability. The Helix Core is a staple in the lineup for good reason, as it is has proven to provide performance that you can count on..

Offered in 100mm and 110mm (shown when available). Sold in a 4pk.