Energy Suspension 9.9005G Coil Spring Dampener Donut Polyurethane Black

Coil Spring Dampener Donut Set Made of superior formulation Hyper-Flex polyurethane and uses high precision bearings. Experience little or no rolling resistance! The unique polyurethane material and design allows smooth, unimpeded rolling for indoor/outdoor ease of movement over cracks, washers, misc. debris, etc. Made Of Superior Hyper-Flex Material Prevents Spring Bottoming Great For Competition Use