..minus 10% inaccuracy to 170-180 kph mayhaps at top speeds, matches technical calculation and data.

Most bike meters are never accurate, what do you expect for example out of a 5000rpm revving 2 stroke engine with final drive of say 0.7 and sprocket ratio of 2.5 say, taking that into account, for an LC135 to even reach 180kph is impossible. its engine limit. Mine is ~13500 rpm, 4-stroke engine, sprocket ration of 3.2, final drive ratio of 0.8xx, rear tire size 140r70-17 gives..http://ninja250.kingston.net/speed.html (this is based on the engine+gear box ratio..so only valid for ex250 derived engine).

E.G. say the blackbird or hayabusa rated top speed is the calculated theoretical maximum speed from the manufacturer's limitation thru rev limiter and through stock final drive to tire size.