Skatepark Formula™ (SPF) is very high quality urethane specifically formulated to resist flatspotting on slick or smooth surfaces while maintaining a higher rebound for a quicker response and a faster roll.
Skatepark Formula™ has a high resistance to abrasion while not compromising hardness and slide ability. Simply put… Skatepark Formula wheels grip better on slick surfaces, are almost impossible to flatspot, and are the fastest, longest lasting wheel on the market today.
You won’t find our Skatepark Formula from any other wheel supplier so get a set and find out for yourself what the word on SPF is all about.
Shore Durometer A Scale is good, but it does not cover the entire range of skate wheel hardness and is very limited because the scale goes from 1 to 100 and anything over A 95A does not compute accurately.
Shore Durometer B Scale is perfect for skate wheels because:
Shore Durometer D Scale is designed for hard rubbers and rock hard urethanes, not soft, bouncy urethanes that are used in skate wheels. It has a very stiff spring behind its sharp conical needle and often punctures the skin of the wheel being measured, this resulting in 5-10 points softer reading than is correct. Thus, Shore D Scale should not be used for wheels in the useful skate wheel range.
About Street Tech Formula™ (STF) Street Tech Formula™ (STF) is specifically engineered from top quality components to obtain all the best properties necessary for the ultimate in street wheel performance.BONES® WHEELS has created a wheel with a substantially higher rebound for more speed and amazing slide capabilities while maintaining a...
Sold Out - $ 31.95
The SPF wheels from Bones feature their awesome Skatepark Formula for a fast roll that won't flatspot from even the worst slides. Quantity: Set of 4 Wheels Surface: Smooth Formula: Skatepark Formula (SPF) Durometer (Hard to Soft): 84b SPF (except eighty ones slim (81b):81b) 53mm 54mm 55mm 56mm 58mm 60mm Diameter (mm): 53.0...
Russell The Mother lovin Muscle! Product Features Wheel Size: 54mm Riding Surface: Smooth Wheel Durometer: 84b Pro Name: Chris Russell
Bones STF Wheels. Sold as 4 Pack