The amazing new X- Formula (XF) is another industry leading innovation from the BONES WHEELS factory. X-Formula rolls over rough terrain like softer wheels do, but slides much like a harder wheel will. X-Formula is extremely fast because it has a super high rebound. X-Formula rolls much smoother and faster on all terrains because it absorbs vibration and softens impacts much better than any other wheel in the market. The slide-ability comes from its unique blend of high performance materials. X-Formula will slide when you ask it to, and grip when you need it most. This is because X-Formula is specially formulated for any terrain. It has been developed over a ten year period to optimize performance and fine tuned to perfection.

Features

• Set includes 4 wheels
• Durometer – 99A
• Perfect slip-to-grip ratio
• Reduces feet numbing vibration
• Absorbs impact for softer landings
• Rolls smoother & faster on all terrains
• Slides like butter & cuts through the crust