I know Nigel Birkett says the standard flywheel weighs 2.1kg, but I seem to remember mine (it came off a TTR125, paid £20 off fleebay) was 1.9kg.
Anyway, all I am saying is don't go less than 1.53kg! I found that the hesitaion was more pronounced with the lightened flywheel (obvious really), but when I lightened mine, I hadn't got the carburation sorted to the extent that I have now. The reason I didn't want to sell mine was, now that my carburation is sorted I quite fancy having another go with it.
The throttle response and acceleration off the bottom was quite something with the lightened flywheel. You are not talking about a small difference. I was very surprised at just how much difference it made. How you get on depends on your riding style I guess.
I would be interested to know how you get on
Edited by Archie, 19 December 2011 - 07:55 PM.