SKUNK2 SPRING BASE KIT HONDA H-SERIES VTECSkunk2 Racing Steel Spring Bases for Hondas H22A and F20B engines are designed to allow all H style VTEC cylinder heads to accept our high performance, Pro Series Valve Springs and Titanium Retainers originally designed for B Series engines. Each Spring Base is manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to make sure the design is optimized for strength and longevity. Engineers then test and prove the