CNC-machined back surprise tower made out of 4.0mm thick premium-grade graphite product for amazing energy and long lifespan. A corner surprise tower features updated surprise functions and three different wing mounting functions. Its befitting both front side and right back motor LCG gearboxes, reducing how many components had a need to change between designs. Shock tower with denser top shock mounting functions for ultrafine set-up changes Universal for both Dirt and Carpet variation. Fits: XB2