One of the ADVANCED SERIES of kits, which include factory pre-slotted airframe and through-the-wall fin construction, the 5.38 V2 is our sport scale version of the infamous WWII German V2 rocket. This boat tail kit comes standard with a 38mm motor mount and flies great on H-180 through J-570 motors. The 5.38 V2 is a great performer on a variety of motor packages from Level 1 to Level 2. We upgraded the shock cord to 25' of 9/16" tubular nylon and added a CEC-2 chain connector to the SCMBA-25 shock cord mount for heavy duty flying Parachute Recovery.