Fullsix Carbon Undertail Cover - Race884535900 Product Description The CENTER + BOTTOM TAIL COVER RACE for DUCATI V4 S 2025 is a racing component that is fully race compliant and incorporate features from World Superbike and British Superbike to give you a competitive advantage such as maximum weight savings and improved aerodynamics. See below for which materials and surface treatments are available. This part will only fit with other V4 RACE parts.