Sprocket Change


Quick question for the masses, I just put on a new change front and rear sprocket, Chain Tsabuki Sigma, front and rear sprockets from Sprocket Spec. I went up two teeth on the rear from 40 to 42. My question is, what is the top speed now, how much is my speedo off, and what type of performance differance will I notice. Thanks to everyone for their time.
Someone out here in Hayabusa.org may know...Going one down one the front lowers your gearing more than minus two on the rear..you will feel more pull in the lower gears..anyway...top speed who knows...just a few mph slower.

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17/42 76 103 131 155 176 191

16/42 72 97 123 146 165 180

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