One of the ISP PERFORMANCE SERIES of kits, which feature factory pre-slotted airframe and through-the-wall fin construction and high power motor capabilities, the EXPEDITER offers sleek styling due to the use of LOC's exclusive airframe reducer. The 54mm motor mount is great for low thrusting 54mm motors like the J90 or I65. This model is a great Level 1 kit that flies on a variety of H and I motors. It is a very cool looking, versatile rocket. Parachute Recovery.