Quick view ICON ICON 10-14 Ford Raptor Rear Hyd Bump Stop Kit - 95120 Compare $2,024.99 The more robust solution is a hydro-pneumatic bump shock or "air bump". ICON's hydraulic bumpstop uses oil and nitrogen to do two tasks: function as a spring and a shock. An internal nitrogen charge is compressed when the air bump is compressed to act as... Add to Cart Add to Cart