Ultra High Travel Hypercoils Are Designed Specifically For Light Rate/ High Travel Coil Over Applications (Pavement and Dirt). UHT Designs Meet The Requirements Of Soft Spring / Big Bar Setups And Remain Consistent In Free Length And Installed Height. The New UHT Design Features a Larger Body Bulge Over Our Standard OBD Designs, Allowing For Additional Deflection, Rate Linearity And Resistance to Bowing.