I'm looking at tweaking my aprilia RS 125 to get the most out of it. Im firstly looking at dropping the front forks about 1.5cm to improve cornering. Does anyone know roughly how much this procedure will cost? Now i've been told the bike is un-restricted from standard...and i've heard that an un-restricted standard aprilia RS 125 has a top speed of 180. Now my bike only reaches 150. Is there a problem with the bike?...does it need to be tuned?...or is the bike not actually un-restricted?