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rider250ex
02-25-2004, 01:15 PM
hey does anyone knwo what the top speed of a 250R is?its ported and polished, fmf fatty pipe and powercore silencer, boyseen rad valve, and other small stuff like k&n, and i am running 22's with stock gearing? anyone have an idea what it will be?

member
02-25-2004, 01:27 PM
umm just a little more than what it was stock.. it will just get there faster

rider250ex
02-25-2004, 01:43 PM
so do you have any idea what the stock top speed is?

sly400ex
02-25-2004, 02:56 PM
70mph tops

AndrewRRR
02-25-2004, 03:45 PM
I clocked mine at 72mph with my GPS. That was with my big bore stroker but I am pretty sure it turns the same max rpm as stock.
You have to re-gear or change the max rpm if you want the bike to have a faster top speed, adding power does nothing (unless you didn't have the power to wind out top gear before).

rollie
02-25-2004, 05:16 PM
probaly a whole lot faster than my 300ex!! lol

rollie
02-25-2004, 06:38 PM
hey does anyone now the top speed of a stock yfz my friend wants to now

ATC Crazy
02-25-2004, 07:05 PM
TRX...about 72+/-
ATC...about 78+/-

ATC Crazy
02-25-2004, 07:06 PM
Stock YFZ = 68-70mph

440exnacsracer
02-25-2004, 07:13 PM
yea, sounds about right on the yfz, my pred was clocked at 74 and i edged out a yfz on top end pretty good,......but that was after i caught up with him lol:( :rolleyes: