The XB4 chassis is revised to place weight further ahead, with side guard mounting roles for symmetrical flex, updated fan owner mounting roles and multiple battery pack position choices to adjust the weight stability. The chassis features a far more ahead biased design. Slipper/center, engine and battery pack had been relocated dramatically forward to improve stability. Along side it guard mounting holes are symmetrical for equal left-to-right flex traits. The chassis features holes for a fan mount and multiple battery pack post jobs to improve the packââ¬â¢s location and adjust the F/R fat stability. CNC-machined from top-quality Swiss 2mm 7075 T6 aluminum, the framework is strategically machined in low-stress areas to make it because light possible without impacting power or rigidity; and it's also also black-coated for increased lifespan.