Bones Skatepark Formula™ (SPF) Sidecut Wheels - 58mm 101A

58mm in diameter by 33mm in width. It’s the measurement for those who live in the bowl and still want to feel the skateboard underneath them. It rolls enough to handle transitions and pick up serious speed, without having to ask everyone for risers.

101A is the hardness where urethane still has some life. It grips polished concrete, the kind found in those old parks where the ground shines and a harder wheel would slide mid-turn. You plant your foot and it holds.

The manufacturer's spec sheet writes the hardness in two ways, 81B and 101A, and it is the same value. Bones measures hard wheels on the B scale, twenty points below the A scale.

The Skatepark Formula was made for concrete. Concrete heats up the urethane and eats it quickly, and this withstands it without getting flat spots.

• Wheel Diameter 58mm
• Wheel Width 33mm
• Wheel Hardness 81B = 101a
• Wheel Formula SPF
• Wheel Color White
• Wheel Suggested Use Skateparks
• Wheel Surface Smooth
• Wheel Shape P5

Sold as a set of 4.