how can i gain more top end speed?

[tony400ex]

to who ever has a 450r i got a programer and an exhaust im running stock gearing ......... what gearing can i use to optimize more top end speed

[Thumpin440ex]

Drop a few teeth off the rear sprocket, go up a tooth on the front sprocket or raise the rev limit. If you re gear you will lose some low and mid range acceleration.

John

[rrguy]

to who ever has a 450r i got a programer and an exhaust im running stock gearing ......... what gearing can i use to optimize more top end speed

for starters, you could try 1 up in front.
I would find a less restictive intake, good aftermarket should give you a couple hp & help top end.