Description of Energy Suspension 4 6102G Spring Isolator
Country of Origin : United States. High performance. Professional products. Hyper-Flex replacement polyurethane components stand up well to contaminants that often destroy rubber.
The round insulators are not cup shaped but simple flat rubber with an inner lip to accommodate the springs. The insulator was too large in diameter to fit in the springs. I had to cut ok. 1.5 inch insulator for mounting.