EXP Series is based on ICON's proven 2.5-inch diameter Aluminum Series shock absorber, featuring a one-piece impact-extruded aluminum shock body. Hard anodizing provides a great-looking, consistent finish with superior resistance to abrasion and corrosion. The massive 7/8-inch diameter shaft is induction hardened and chrome plated. 2005-2023 Tacoma EXP shocks mount in a shaft-up orientation and include the upper shock mount and spring seat.