Standard threaded metal push rods housed in plastic tubes that run through the formers. Standard setup. I have been flying mine since Oct. 2003. Easy to assemble. It come out very nose heavy with an Evo. .61 2stroke. Took several ounces of weight in the tail to balance. Flies great. No trim was needed at all. Using JR 537 standard BB servos and R700 rx and 1100mah battery. I recommend the plane. Good choice.