Bones Wheels X-Formula XF Standard V1 97a 54mm Natural 31/32 Thunder’s proven quick response

Thunder’s proven quick response

Impact absorbing high density internal foam

Clean and understated

Material: Formula Four urethane for long-lasting performance

Pro-Tec has spent the last 4 decades listening to the needs of skaters all over the world

Bones Wheels X-Formula XF Standard V1 97a 54mm Natural 31/32 Thunder’s proven quick responseBones Skateboard Wheels X Formula V1 Standard Shape Wheel size: 54mm Hardness: 97a Set of 4 wheels Natural About: 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. BONES unique formulas are solely developed and produced in Santa Barbara, CA. Using drastically different physical and engineering properties for each