CNC-machined battery pack backstop for XRAY X1219 produced from premium-grade graphite product. The battery pack backstop and back link brace allow for a wider selection of battery pack positioning modification. The brace includes two holes into that your adjustable battery backstop is placed. The battery backstop has 4 positions which permit the batteries become relocated more forward. The distance between each position is 2mm, therefore as a whole the battery pack is relocated up to 6mm more forward. Frontward-placed battery pack makes the automobile simpler to drive, decreases wheel lift in corners, and makes the car more predictable over bumps. Rearward-placed battery pack makes the car more aggressive, increases cornering rate, but makes the vehicle more difficult to drive.