i have change the clocks for a digtal dash would there be any thing i wolud have not used to wire it up that needs conecting only useing oil pressure, nutral switch, water temp and a live rev counter has it's own wire to a coil

It's your 14T front sprocket.

Standard gearing is 15/45

57 sounds really heathy.

It should pull to the start of the redline in 6th easily with standard gearing if its healthy (which it sounds like it is)

Thats circa 130 / 135 ish.

Put a 15t back on the front and see how it goes.

The 14T will imrove accelleartion slightly but limit top speed

14t should still let it rev out in 5th and 6th though Neo?? It should let it rev it's arse off...

I suppose it should... the op didn't say what the revs were doing... just that it wasn't going fast enough...

It should do at the red line 136mph... (i just worked it out) thats with the wind behind you.. ive seen ti many times on my 24.

been a long time since I farted around with the gearing though... 15/45 was fine with me.. anything else was too much of a comprise.. plus its the easiest thing to change to see if it improves.

if you want faster get a bigger cc bike :)

well thanks for all your help think im going to put it down to being street fighted and losing all the arodynamics with the standerd gearing its worse thats why i put a 14t front sprocket on it as had one laying around

4th change just before redline to 5th and it just feels like its running out of power like the bike is way over geared

still a very fun littel bike on small twisty road

What have you done to it



The NC21Z was kinda naked and that still revs out... maybe air-intake or something.. really hard to say without having a good look at it.

Could be fuelling or gearing.. if you've tried std gearing and its worse could be fuelling, i've youve streetfightered it all the air-intake could be messed up somewhow