Profile: Rubbershox Inc. specializes in thermoplastic rubber enhancements for automotive coil springs. Our product line provides a simple solution for driving stability and weight tolerance while extending the operational lifespan of vehicular suspension systems. DuraTPE? Series Front-Rear automobile coil spring buffer /booster is a shock absorbing lift kit accessory that provides a tighter, more resilient suspension. This absorbs and dissipates the shock from rough road conditions with greater driving stability while extending the life of coil springs and the suspension system.​