my nsr 150rr able to top at 180km/h @ maxed out 11,000rpm. wish i got 7 gears.... was using 100/90 R18 rear tyre and 47-spoke rear sprocket. engine straight away jammed but luckily i didnt fall.

need to rebore the block, changed to kawa KR150R piston and piston ring. i also changed the rear tyre to 90/90 R18 and a smaller 42-spoke sprocket. attempted another top speed and almost touched 200km/h.