This GPM MAK007 rear arm bulkhead is built from 6061 T6 aluminium and finished for a precision fit on ARRMA Typhon, Senton, Kraton and Talion platforms. The hollow profile lowers component weight while retaining structural rigidity, providing a robust mounting point for your RC vehicle's front upper arms and improving resistance to wear under regular use. It is specified for modelers who want a technically focused, durable upgrade to standard plastic parts.