lots of pluses for going to a "55" just think i might toss this into the ring, my mate who has a Bennelli Tornado, who tracks it, has gone to a 180 - 55 has anyone gone this route, he said it totally transformed the bike, i know its a different bike, but any thoughts on this, i basically know jack shit about all this, am just curious, i need a new rear before the new year, its gonna have to be a bridgestone as i have got a new front on it (04 Blade)