My SSR Buccaneer 250i has a top speed of 88mph with a smaller (80 profile) rear tire This is equivalent to 2 more teeth on the rear sprocket. Top speed was attained on a cool night, downhill, in a tuck. Speedo is off 6.15%, so that's 82.5 mph actual.
It cruises mid to upper 70s easily on the highway with this setup.
Also note I'm 250 lbs, so a lighter rider will have an even better experience with this bike.
Charles.
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