CNC-machined aluminum back surprise tower from 3mm thick premium Swiss 7075 T6 aluminum. Up-to-date shock mounting jobs featuring a supplementary extra shock mounting spot for extra-fine tuning. Ultra-rigid design for unsurpassed energy and long lifespan. The aluminum surprise tower is stiffer than graphite making the automobile easier to drive plus much more predictable. Includes numerous surprise functions. Ebony coated. Laser-engraved as a result of the XRAY custom logo design.