This is an Exotek Traxxas Slash +28mm Carbon Rear Body Mount, an optional body mount cut from quality 3mm carbon fiber plate with alloy base body mount set intended for use with 2wd Slash drag and oval body mounting. This part extends the body mount back by 28mm and out of the rear windows of most street eliminator cars. The rigid carbon fiber construction delivers less body bounce and flex while the multi-position alloy base mount allows for lower body mounting.