Fits any chassis with CW battery mount spacing. Adjustable battery mounts allow you to move the mounts left, right or center by .150" increments to adjust for changing track conditions or when going to different tracks. Comes with 2 mounts, 4 aluminum spacers, and 4-40 hardware to secure it. Mounts are made from carbon printed kydex to allow the chassis to flex slightly and more consistently over a carbon mount.