Hurrah is right IMO .
I use a 58cm bar on my 14m co2 2004 and i would say that it is not the fastest kite to begin with so by reduceing the bar you will only slow it down more. Try and get a good second hand bar to fit the kite , CAB bars are very cheap for some reason . There was some in the forsales for around $100 -$150 or you could buy a RECON GEN2 i think they have just dropped the price of them .