2016-2023 Nissan Titan XD 2.5 Vs Internal Reservoir Coilover Kit ICON Vehicle DynamicsICON Vehicle Dynamics V. S. 2. 5 Series internal reservoir front coilover shocks are an incredible upgrade for the front end of the 2016 2023 Nissan Titan XD. These adjustable coilovers allow up to 2. 5 3 Inch of front lift height adjustability, allowing the use of larger, more aggressive wheel and tire combinations. ICON's Vehicle specific shock length and valving along with the larger 2. 5 Inch shock body and increased piston area over stock