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What's your 250 top speed ?

182199 Views 161 Replies 61 Participants Last post by  flitecontrol
I am curious as to what top speed your 250's will do .Was comeing home yesterday in freeway posted speed 100 kph [62 mph] n noticed speed i was doing 120 kph [74.5 mph] & was doing it easy had plenty of throttle left , next time am out will try to see what she will do. :dance:
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Nope. Mph I had iCarly had 1/8 left

110KPH = 89mph, possible

110MPH on a 250 Rebel with only "better" spark plugs, either you or your buddy that was clocking you should consider a career in science fiction.
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I want to find out what else this bike can do !!!
I want to find out what else this bike can do !!!
leak oil




ps i dont even have a pilot screw
ProDigit? Is that you?!?
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110 kph is only around 70 mph Richard,... That's the speed limit on our 4 lane highways around here.
110 kph is only around 70 mph Richard,... That's the speed limit on our 4 lane highways around here.
That's what I get for trying to remember the conversion rate vs looking it up on Bing or Google. ;)

The KPH is even more believable, but I'm still calling dudeman for the SAE unit of measure with that number. :D
ProDigit? Is that you?!?
:lol2::lol2::lol2::lol2::lol2::lol2::lol2:
110kph = 68.35mph
According to gearingcommander.com - 110 mph is 11940 rpm in 5th gear - NOT BAD !!!

this is assuming stock setup - if he has the 15/30 sprockets it would be much MUCH lower
But doesn't the Rebel 250's engine power band fall off the board around 7,000-8,000?
most do, yes
According to gearingcommander.com - 110 mph is 11940 rpm in 5th gear - NOT BAD !!!
It would be not bad if the Rebel engine could spool up like that.
Unfortunately the Rebel dyno chart ends before 11,000 rpm. Notice that the horsepower at 10,500 is back below 12 from a peak of near 16, and torque is down to under 8 ft-lbs from a peak that is about 50% higher. If stock gearing yields a typical top speed of near 80 at 8000 rpm and around 10.5 lb-ft. torque. There is no way that we're going to 110 mph and a much higher engine torque requirement at 11,000 rpm where we're down to 7 ft-lbs and change. It is pure fantasy.

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yes but can you imagine what it would sound like with some shorty mufflers !?!
yes but can you imagine what it would sound like with some shorty mufflers !?!
I used to ride my daughter's old 4 cylinder R6 wound out to 15,000 RPM... Now that was a sound! A Rebel with Shorties is not going to be in that league methinks.
One thing is for sure, if the claim is true then I'm putting those plugs into my Shadow so I can destroy some Hayabusas.
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110 mph on a stock 250 Rebel = not possible on this planet (no matter what "spark plugs" you use).

Sent from my SM-G935T using Tapatalk
Bit it's not stock...it has better plugs. Slap a "TURBO" sticker on the tank and it'll do 140 for sure!
So far the claim is "all stock" with "better plugs" (which, judging by the pic, is merely a hotter plug versus the more expensive Iridium plugs etc) and "Shell 91" (which we all know works just as well as Shell 87 albeit at 30-40¢ more per gallon, the oil companies & their shareholders LOVE people like this).

His last post states he has no pilot jets. Now call me a skeptic, but that doesn't sound like a plausible modification for a bike that can go 25+mph faster than the rest of the Rebel population is capable of, let alone something that can even go the manufacturer & magazine claimed 75-85mph.

Folks, we're in the presence of a dudeman.
Brilliant analysis Professor Shadow Shack, I concur! :nerd:
Bye-bye pilot jets on the Shadow, Isle of Man TT here I come!
I've done exactly 65 im a lil sad I can't do 70 at the very least. Guess I'll need to get a faster bike lol mine is a 2000 honda rebel 250
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